The Collaborative International Dictionary
Pterylae
Pteryla \Pte*ry"la\, n.; pl. Pteryl[ae]. [NL., fr. Gr. ? feather + ? wood, forest.] (Zo["o]l.) One of the definite areas of the skin of a bird on which feathers grow; -- contrasted with apteria.
Wiktionary
pterylae
n. (plural of pteryla English)
WordNet
pterylae
See pteryla