Definitions of calyculus

n a small cup-shaped structure (as a taste bud or optic cup or cavity of a coral containing a polyp)

caliculus, calycle
eyecup, optic cup
(embryology) a two-walled cuplike depression that develops into the pigmented and sensory layers of the retina
Type of:
anatomical structure, bodily structure, body structure, complex body part, structure
a particular complex anatomical part of a living thing

n a group of bracts simulating a calyx as in a carnation or hibiscus

calycle, epicalyx, false calyx
Type of:
a modified leaf or leaflike part just below and protecting an inflorescence

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