a hole with a metal ring around it in a piece of cloth or leather, normally used for passing a rope or string through Insert the tent poles through the eyelets on the groundsheet. The jacket has underarm eyelets for ventilation. Word Origin late Middle English oilet, from Old French oillet, diminutive of oil
‘eye’, from Latin oculus. The change in the first syllable in the 17th cent. was due to association with eye.