• Webster's Revised Unabridged Dictionary
    • a Fissirostral (Zoöl) Having the bill cleft beyond the horny part, as in the case of swallows and goatsuckers.
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Century Dictionary and Cyclopedia
    • fissirostral In ornithology, having the beak broad and deeply cleft, as a swallow, swift, or goatsucker; specifically, of or pertaining to the Fissirostres. This group has been abolished, but fissirostral is retained as a convenient descriptive epithet.
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Chambers's Twentieth Century Dictionary
    • adj Fissirostral fis-i-ros′tral having a deeply cleft or gaping beak, as swallows, &c.
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Webster's Revised Unabridged Dictionary
Cf. F. fissirostre,
Chambers's Twentieth Century Dictionary
L. fissus, cleft, rostrum, a beak.


In literature:

It belongs, as most of you know, to a family of birds called Fissirostres, or, literally, split-beaks.
"Love's Meinie" by John Ruskin
FISSIROSTRAL birds, nests of, 238.
"Contributions to the Theory of Natural Selection" by Alfred Russel Wallace