the GNU version of the Collaborative International Dictionary of English
noun-plural. See prehensile processes on the cells of some Bryozoa, often having the shape of a bird's bill.
The Century Dictionary and Cyclopedia
n. Plural of avicularium.
Word Usage
"But structures essentially similar (called avicularia, or "bird's-head processes") are developed from the surface of the compound masses of certain of the highest of the polyp-like animals"