Definition of cleg in English:

cleg

noun

British
  • another term for horsefly
    • ‘He reminded his frantically puffing audience that smoking was a well-known antidote to the predations of the great horse fly, or cleg.’
    • ‘The heat was great, and the clegs and other flying torments were having a grand time at our expense.’
    • ‘It is, of course, the midges and the clegs who present the major problem to the Scottish naturist.’
    • ‘Usually they are called clegs, horse-flies or gad-flies, without referring to one specific species.’
    • ‘But most of the walk was a weary exercise in plodding along the old military road, warily eyeing up the murky clouds while midges attacked me and clegs took chunks out of my legs.’
    • ‘The clegs were in good form tonight, and they were proving annoying so I sprayed on Skin So Soft.’
    • ‘On Sunday I was bitten three times by clegs.’

Origin

Late Middle English: from Old Norse kleggi.

Pronunciation:

cleg

/klɛɡ/