Webster's 1913 Dictionary
AVICULA
A *vic "u *la, n. Etym: [L., small bird. ] (Zoöl.)
Defn: A genus of marine bivalves, having a pearly interior, allied to the pearl oyster; -- so called from a supposed resemblance of the typical species to a bird.
AVICULAR
A *vic "u *lar, a. Etym: [L. avicula a small bird, dim. of avis bird. ]
Defn: Of or pertaining to a bird or to birds.
AVICULARIA
A *vic `u *la "ri *a, n. pl. Etym: [NL. See Avicular. ] (Zoöl.)
Defn: See prehensile processes on the cells of some Bryozoa, often having the shape of a bird's bill.
New American Oxford Dictionary
avicularium
a vic u lar i um |əˌvikyəˈle (ə )rēəm əˌvɪkjəˈlɛriəm | ▶noun ( pl. avicularia |-ˈle (ə )rēə | ) Zoology (in some bryozoans ) any of a number of modified zooids that take the form of a pair of snapping jaws resembling a bird's head, serving to prevent other organisms from settling on the colony. Compare with vibraculum. ORIGIN mid 19th cent.: modern Latin, from avicula, diminutive of avis ‘bird. ’
Oxford Dictionary
avicularium
avicularium |əˌvɪkjʊˈlɛːrɪəm | ▶noun ( pl. avicularia |-rɪə | ) Zoology (in some bryozoans ) any of a number of modified zooids that take the form of a pair of snapping jaws resembling a bird's head, serving to prevent other organisms from settling on the colony. Compare with vibraculum. ORIGIN mid 19th cent.: modern Latin, from avicula, diminutive of avis ‘bird ’.
The Wordsmith Dictionary