Open English WordNet
Noun (1)
- a supplementary feather (usually small) on the underside of the base of the shaft of some feathers in some birdsType of plume, plumage
What does it mean? Question 1 of today’s quiz
Webster's Dictionary (1913)
Aft′er·shaft′ (…), noun
Zoology The hypoptilum.
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54