from French cru "vineyard," literally "growth" (16c.), from Old French crois (12c.; Modern French croît), from croiss-, stem of croistre "growth, augment, increase," ultimately from Latin crescere "come forth, spring up, grow, thrive" (see crescent).
crus (krōōs, krŭs)
n. pl. cru·ra (krur'ə)
The section of the leg between the knee and foot; lower leg; shank.
A body part consisting of elongated masses or diverging bands that resemble legs or roots.
Either of a pair of diverging bands or elongated masses.