- Any of various chiefly nocturnal, insectivorous birds of the family Caprimulgidae, especially those in the genus <em>Caprimulgus.</em>
- A bird, <em>Caprimulgus europæus</em>, of the family <em>Caprimulgidæ.</em>
- A goatsucker, esp. the European species. See <ex>Illust.</ex> of <xref urlencoded="goatsucker">goatsucker</xref>.
- Any of various medium-sized nocturnal <xref>birds</xref> of the family <xref>Caprimulgidae</xref>, that feed predominantly on <xref>moths</xref> and other large flying <xref>insects</xref>.
- mainly crepuscular or nocturnal nonpasserine birds with mottled greyish-brown plumage and large eyes; feed on insects