On grammatical class:

le
non-veridical descriptor: the one(s) described as ...
le'e
non-veridical descriptor: the stereotype of those described as ...
lei
non-veridical descriptor: the mass of individual(s) described as ...
le'i
non-veridical descriptor: the set of those described as ..., treated as a set.
lo
descriptor: the one, which (is / does) ... / those, which (are / do) ...
lo'e
veridical descriptor: the typical one(s) who really is(are) ...
loi
veridical descriptor: the mass of individual(s) that is(are) ...
lo'i
veridical descriptor: the set of those that really are ..., treated as a set.
ji'ai
job descripter: the one which does …
kai'i
Property relativizing determiner. {kai'i} introduces a predicate whose first argument slot becomes filled by the property made by taking the bridi in which this {kai'i} appears and putting {ce'u} into the argument slot in which this {kai'i} argument was located. Put formally, "kai'i brodi cu brodu" = "lo ka ce'u brodu cu brodi". Additionally, a {kai'i} term has a rightward logical scope, like quantifiers and adverbials.
lei'e
anaphoric mass gadri: start a description of a mass/group/constituency mentioned earlier in the text/conversation, viewed as a whole
lei'i
demonstrative mass gadri; start a definite description that refers to a mass/group/constituency in the shared frame-of-reference, viewed as a whole
loi'e
generalized mass gadri; start a description of a generalization of some mass/group/constituency viewed as a whole
loi'i
essentialist mass gadri; start a description of an essential characterization of some mass/group/constituency viewed as a whole
lo'o'o
plural logic maximum-scope descriptor: those who individually or collectively are ...
me'ei
Article for abstract predicate sumti. Turns a selbri into an abstraction with all open places filled by {ce'u}.
moi'oi
interrogative mass gadri: "which group of..."; viewed and counted as a group
mo'oi
interrogative gadri: "which"
ri'oi
the latest aforementioned...; refers back to the most recently mentioned thing(s) that satisfies the x1 of the following predicate
zo'ai
quotes a selbri.
ledo
possessive/associative descriptor: the one(s) described as, of yours.
le jaica
description: marks description extracting the time tense place of the description bridi.
le jaigau
description: marks description extracting the agentive place of the description selbri.
le jaivi
description: marks description extracting the location place of the description bridi.
leko'a
possessive/associative descriptor: the one(s) described as, of it-1's.
lemi
possessive/associative descriptor: the one(s) described as, of mine.
lenu
specific event descriptor: contraction of {le nu} and identical in meaning.
leta
possessive/associative descriptor: nearby demonstrative possessive; cannot use for 'THAT ...'.
leti
possessive/associative descriptor: immediate demonstrative possessive; cannot use for 'THIS ...'.
letu
possessive/associative descriptor: distant demonstrative possessive.
leva
located descriptor: descriptive that-there (non-demonstrative).
levi
located descriptor: descriptive this-here (non-demonstrative).
levu
located descriptor: descriptive that-yonder (non-demonstrative).
lonu
event descriptor: contraction of {lo nu} and identical in meaning.

In definition:

tu'a
extracts a concrete sumti from an unspecified abstraction; equivalent to le nu/su'u [sumti] co'e.
voi
non-veridical restrictive clause used to form complicated le-like descriptions using "ke'a".
jai'i
takes NU or LE NU, turns into sumtcita: clarifies the semantic NU-type of the current bridi.
le'au
Start property which sets the meaning of {le} in the surrounding text.
cmavrle
x1 is the selma'o "LE".

In notes:

bongu
x1 is a/the bone/ivory [body-part], performing function x2 in body of x3; [metaphor: calcium].
gadri
x1 is an article/descriptor labelling description x2 (text) in language x3 with semantics x4.
fegmliba'u
m1=f1=b1 grumbles with sound b2 at f2 because of f3 (action/state/property).
molgle
g1=m2 performs oral sex on g2.
gi'ei
afterthought abstraction wrapper
lai'e
Named reference. It converts a sumti into another sumti. The converted sumti points to the referent the name of which is the referent of the unconverted sumti.
ru'oi
quantifier: "all" (as opposed to "every")
aigne
x1 is an eigenvalue (or zero) of linear transformation/square matrix x2, associated with/'owning' all vectors in generalized eigenspace x3 (implies neither nondegeneracy nor degeneracy; default includes the zero vector) with 'eigenspace-generalization' power/exponent x4 (typically and probably by cultural default will be 1), with algebraic multiplicity (of eigenvalue) x5
endi
x1 (digit string/byte, storage system, convention) has endianness x2 ("ce'o" sequence of numbers (li); description (ka?)); x1 is x2-endian.
le'elkai
x1 is/are the thing(s) described/named with property x2 by the speaker, who thinks this is contextually enough information for the listener to understand what are x1's referent(s)
xa zei sumtika
x1 is a part of Lojban text representing rule 'sumti-6' according to the first edition of the book 'The Complete Lojban Language'.
ka'urkuarka
k1 is a quark with flavor k2.