Source : WordNet®

calyculus
     n 1: a group of bracts simulating a calyx as in a carnation or
          hibiscus [syn: {epicalyx}, {false calyx}, {calycle}]
     2: a small cup-shaped structure (as a taste bud or optic cup or
        cavity of a coral containing a polyp) [syn: {caliculus}, {calycle}]