I just got points for COROLLA.
It turns out to be a botany term:
"(An outermost-but-one whorl of a flower, composed of petals, when it is not the same in appearance as the outermost whorl (the calyx); it usually comprises the petal, which may be fused."
But I also looked up the origin of the Toyota compact car's name, and I'm glad I did, because that's even better. "Corolla" is the Latin diminuitive for "corona" or crown. Toyota's main full-size sedan from 1955 onward is the Toyota Crown, and it turns out Toyota's smaller main-line sedans have names derived from "Crown." The Corolla, a compact, is a "little Crown." (And the midsize Camry comes from the Japanese word "kanmuri" which also means "little crown.")