Ingurgiter son bilan (popular), to die, or “to snuff it.” See [Pipe].
Inodore, adj. (familiar), soyez calme et ——, be cool; don’t get excited; be calm; be decorous, or, as the Americans say, “pull your jacket down.”
Inouisme, m. (familiar), ruisselant d’——, extraordinarily fine, good, dashing, “slap up, or tzing tzing.”
Inséparables, m. pl. (familiar), cigars sold at fifteen centimes a couple.
Insinuant, m. (thieves’), apothecary; one who performs, or used to perform, the “clysterium donare” of Molière.
Insinuante, f. (thieves’), syringe.
Insinuation, f. (thieves’), clyster.
Insolpé, m. and adj. (thieves’), insolent, “cheeky.”
Inspecteur des pavés, m. (popular), workman out of work, or “out of collar.”
Institutrice, f. (popular), female who keeps a brothel; the mistress of an “academy.”