• Webster's Revised Unabridged Dictionary
    • n Sicklebill (Zoöl) Any one of three species of humming birds of the genus Eutoxeres, native of Central and South America. They have a long and strongly curved bill. Called also the sickle-billed hummer.
    • ***
Century Dictionary and Cyclopedia
    • n sicklebill A name of various birds whose bill is sickle-shaped or falciform; a saberbill. Those of the genera Drepanis, Drepanornis, and some allied forms.
    • n sicklebill The California thrasher, Harporhynchus redivivus.
    • ***