pygostyle means the plate supporting the tail-feathers in birds, formed from fused vertebrae. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
pygostyle is pronounced /ˈpaɪɡəstaɪl/.
noun
- The plate supporting the tail-feathers in birds, formed from fused vertebrae.“Aderyn the Bird Queen sat down; her pygostyle engaged a hard wooden bottom.”