ζῳόνυχον

From LSJ

Γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ → The fool laughs even when there's nothing to laugh at

Menander

Spanish

leóntica

Greek (Liddell-Scott)

ζῳόνῠχον: τό, λεοντοπόδιον Διοσκ. 4. 131.