Green’s Dictionary of Slang

1. (N.Z. prison, also coie) a co-defendant.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 195/1: twin n. lone's co-offender (cf. coie). 2 (the twins) two inmates who are very close friends and spend much of their time together.

2. (N.Z. prison, also coie) a pair of close friends.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 195/1: twin n. 2 (the twins) two inmates who are very close friends and spend much of their time together.