2 definitions
for cleg
From The Collaborative International Dictionary of English v.0.48 :
Cleg \Cleg\, n. [Northern Eng. & Scot. gleg: cf. Gael.
crethleag.] (Zool.)
A small breeze or horsefly. [North of Eng. & Scot.]
--Jamieson.
[1913 Webster]
From WordNet (r) 2.0 :
cleg
n : large swift fly the female of which sucks blood of various
animals [syn: horsefly, clegg, horse fly]