klíč

Etymology 1
, From, from , from , from , an extended form of.

Noun

 * 1) key of a lock
 * 2) wrench (US), spanner (UK)
 * 3)  clef
 * 4)  key
 * 5)  key field of a relation constrained to be unique
 * 6) clue informations which can lead one to a certain point

Etymology 2
From, from , a derivation of.

Noun

 * 1)  embryo, germ