- having a broad, deeply cleft beak or bill, as the swallows and goatsuckers.
- (of the bill) deeply cleft.
Origin of fissirostral
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (of the beaks of some birds) broad and deeply cleft
- having such a beak, as swifts and swallows