- penniform
[penniform 词源字典]
- "Resembling a feather; specifically (of a muscle) having fibres attached to a tendon like the barbs of a feather to the rachis", Early 18th cent. From post-classical Latin penniformis (G. A. Borelli De Motu Animalium I. xv. 123) from penna feather + -formis.[penniform etymology, penniform origin, 英语词源]