xanbau lujvo

b1 is a Signed Language used by x2=b2 to express/communicate b3 (si'o/du'u, not quote).

(x1) - "Sign Language" in the sense of visually transmitting patterns using hands, arms, body, and facial expression to convey meaning (i.e., Manual communication, body language). (x2) - "Sign Language speaker." See also xanle'u, xanle'ule'u, xancrcereme and saskrcereme. (x3) - "thing expressed in Sign Language." See also xance, bangu.

In notes:

bancocysle
s1=c1 is a linguistic-gesture unit/chereme [in analogy with phoneme; specifically, nonvocal] representing/that is recognized meaningful conceptual subunit underlying specific gestures/gesture-phones s2 in language b1 used by b2 in order to communicate/express b3=c2 (si'o/du'u; not quote) made using body part/utensil/tool/locus c3 by motion/action/means c4
xanle'u
l1 (la'e zo BY/word-bu) is a hand sign in character-set of sign language/system of manual communicationl2 representing l3 performed by hand(s) x1.
xanle'ule'u
xl1 (la'e zo BY/word-bu) is a fingerspelling sign in character-set of sign language/system of manual communication xl2 representing letter/digit/symbol xl3=l1 in written alphabet/character-set xl2 performed by hand(s) xl4.
saskrcereme
x1 is cherology/phonology of sign language x2.
xancrcereme
x1 is a chereme/phoneme in character-set of sign language x2, characterized by tab (elements of location) x3, dez (hand shape) x4, sig (motion) x5, ori (orientation) x6 and facial expression/mouthing x7.