shop talk

(неисчисляемое)A discussion about one's trade, business, or employment that only others in the same field can understand.

Fachgespräch

talk about your business that only others in the same business can understand

(неисчисляемое)Any language considered (or alleged to be) acceptable in a single-sex workplace (typically a workshop), but not in mixed or polite company.

Near-synonym: locker room talk