On gloss:

ckiku
x1 is a key fitting/releasing/opening/unlocking lock x2, and having relevant properties x3.
termifckiku in sense "cryption"
m1=c1 is a cryption key of m3(cryption/cryptography algorithm)
termifckiku in sense "cryptography"
m1=c1 is a cryption key of m3(cryption/cryptography algorithm)
zgito'acmi in sense "music tone" on place 2
x1 is a note in musical key x2 used for music/to tune instrument x3
tekla in sense "of keyboard"
x1 is a button/key (of piano, typewriter, computer) causing event x2 (property of x1)

In definition:

daplu
x1 is an island/atoll/key of [material/properties] x2 in surroundings/body x3; x1 is insular.
karcyckiku
c1 is a car key opening/unlocking a lock of car c2=k1, and having relevant properties c3.
kardyckiku
x1=k1=c1 is a key card unlocking lock x2=c2 by property/card type x3=c3
sizyseltelkiknunselcpakezykezysminabmi
x1 is a paradoxical problem in which the key to solution can only be obtained by overcoming/solving the problem first
te'a'a (exp!)
tekla modal: with key/button... (computer game context)
cistrxaioliiano
x1 is the minor key (natural minor/Aeolian) of tonic x2 of / with type / notes x3.
cistrxiioniiano
x1 is the major key of tonic x2 of/with type/notes x3.
konceto
x1 is concerto number x2 in key x3 composed by x4 performed by/at x5( event).
nimrnxaurantifola
x1 is a key lime [fruit/tree, etc.] of cultivar x2.
simfoni
x1 is symphony number x2 key x3 composed by x4 performed by/at x5 (event).
spoilero
x1 is a spoiler, a document, review or comment that discloses x2 that is a continuation or a key surprise or twist in a story
vi'olcelo
x1 is a cello/violoncello tuned to key x2
vi'olni
x1 is a violin tuned to key x2
vi'olta
x1 is a viola tuned to key x2
konceto zei pagbu
p1 is a movement of concerto for solo instruments k2, number k3 in key k4 composed by k5.
simfoni zei pagbu
p1 is a movement of symphony number k3 in key k4 composed by k5.
cistrxaioliano
x1 is the minor key of tonic x2 of/with type/notes x3.
cistrxioniano
x1 is the major key of tonic x2 of/with type/notes x3.
nimrnxaurantifolia
x1 is a key lime [fruit/tree, etc.] of cultivar x2.
jgitrviolino zei konceto
x1 is violin concerto number x2 in key x3 composed by x4 performed by/at x5( event).
pipnrpiano zei konceto
x1 is piano concerto number x2 in key x3 composed by x4 performed by/at x5( event).

In notes:

preci'e
x1 is a plural system in body x2 with members/selves x3.
taxfrbikini
x1 is a bikin/two piece skimpy woman's garment of material x2 consisting of top x3 and bottom x4