n.
Pronunciation: ˌ lep-t ə - ' se-f ə -l ə s
Function: noun
Inflected Form: plural -li \ - ˌ l ī , - ˌ l ē \
Etymology: New Latin, from Greek leptos + kephal ē head ― more at CEPHALIC
Date: 1769
: a long thin small-headed transparent pelagic first larva of various eels