gim ‧ let /ˈɡɪmlət, ˈɡɪmlɪt/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Language: Old French ; Origin: guimbelet , probably from Middle Dutch wimmel 'tool for making holes' ]
1 . a tool that is used to make small holes in wood so that you can put screws in easily
2 . gimlet-eyed/gimlet eyes if someone is gimlet-eyed, or has gimlet eyes, they look at things very hard and notice every detail