DCHP-1 Online
mosquito hawk † 
1a Obs. See quote.
- 1743 (1949) Musketo hawk's (alias) Suacanappasish is Like for shape and make what we call a horse fly in England, these does Rather good than harm, killing a great quantity of musketoes and flesh flies.
- 1959 Common Nighthawk [is also called] mosquito hawk (Que., "Hudson Bay," P.E.I., N.S., N.B., Man., Sask., B.C.).
1b a dragon-fly.
- 1826 (1832) Thousands of long large flies, similar to the English dragon fly, but a little smaller, are flying about the fields; they are called musquito hawks, on account of their killing and living on those insects.
- 1923 The brilliant dragon-flies, black and green, banded like sounding-poles used for the shallows, are called mosquito-hawks.
- 1933 [They were] dragon-flies (mosquito hawks as they are called here). . . .
2 the nighthawk, Chordeiles minor.
- 1796 (1911) I saw mosquito hawks' nests, at least the eggs and young birds lying in pieces of bark on the ground.
- 1866 . . .the somewhat rare swallow-tail or musquito-hawk, in the neighbourhood of St. Davids, soaring in pursuit of insects, and performing the most singular and graceful evolutions.
- 1938 A mosquito hawk zoomed belatedly overhead.
- 1743 (1949) Musketo hawk's (alias) Suacanappasish is Like for shape and make what we call a horse fly in England, these does Rather good than harm, killing a great quantity of musketoes and flesh flies.