1885 C. SwainsonProvinc. Names Brit. Birds 97 Nightjar (Caprimulgus europæus)..From its fondness for moths and beetles it has also the names of..Moth hawk (Forfar). Gnat hawk (Hants).
1885 [see ].
extracted from gnatn.1
gnat-hawk
2. With qualifying word as night-hawk, dor-hawk, gnat-hawk, moth-hawk, screech-hawk, applied to the goatsucker. (See these words.)