Loophole; named for the small holes through which archers would fire, Read more:

Loophole: Is made up of ‘Loop’, which actually originates in the Latin ‘loupa’, later ‘loupe’ in middle English, which meant a small window. And ‘hole’, which comes from the proto-Indo-European (PIE) word ‘kel’, which later became ‘hul’ in early German and ‘hohl’ in modern German. Today loophole is used to mean an almost unnoticeable hole in a…