Dictionary.net

• A tribe of perching birds, with a very large gape, which feed on insects taken during flight.

1914 - Nuttall's Standard dictionary of the English language
By Nuttall, P.Austin.

• n. pl. [Latin] The swallow order of birds, comprehending goatsuckers, whip-poor-will, swifts, and martins.

1871 - The Cabinet Dictionary of the English Language