thimblePronunciation: /ˈθɪmb(ə)l/Translate thimble | into French | into German | into Italian | into Spanish Definition of thimble noun 1a small metal or plastic cap with a closed end, worn to protect the finger and push the needle in sewing. 2a short metal tube or ferrule. 3 Nautical a metal ring, concave on the outside, around which a loop of rope is spliced. Origin: Old English thȳmel 'fingerstall' (see thumb, -le1)thimble in other Oxford dictionaries Definition of thimble in the US English dictionary