lypressin
- n an antidiuretic and vasoconstrictor used to treat diabetes insipidus
lyra
- n a small constellation in the northern hemisphere near Cygnus and Draco; contains the star Vega
lyre-flower
- n garden plant having deep-pink drooping heart-shaped flowers
lyre snake
- n mildly venomous snake with a lyre-shaped mark on the head; found in rocky areas from southwestern United States to Central America