Iot fetis (Breton cant), porridge of buckwheat flour.
Ioulc’h (Breton cant), giddy girl.
Ioulc’ha (Breton cant), to play the giddy girl.
Ipéca, m. (military), le père ——, the regimental surgeon.
Irlande, f. (thieves’), envoyer en ——, to send anything from prison.
Irréconciliable, m. (familiar), member of the opposition under Napoleon III.
Isgourde, f. (popular), ear, “wattle,” or “lug.”
Isolage, m. (thieves’), abandonment; leaving in the lurch.
Isoler (thieves’), to forsake.