Grellmann (1787) collected the forms Tʃchib, Tʃcheb ‘The Tongue’ and Tʃchip ‘The Speech’ from Continental gipsies.
Grose and Egan (1823) attest the forms chive, chiff ‘a knife, file, or saw.
Smart & Crofton (1875) collected the forms chib, chiv, jib n., ‘the tongue, language’ from English Gypsies.