(Canada, US, informal) Very intelligent.

(informal) Alternative form of smart arse

(informal) having the irritating qualities of a smart arse, with a know-it-all attitude.

plural of smart-arse

plural of smart bomb

A mobile device worn on the wrist, often with a display that can be used to control a smartphone or to keep track of information such as fitness levels.

plural of smart phone

Alternative form of smartphone

plural of smart shop

A retail establishment that specializes in the sale of psychoactive substances.