Having knowledge obtained by reading and studying, rather than by practical experience.

Alternative spelling of book smart

(computing, typography) curly quotes automatically inserted into text as a replacement for the original straight quotes

(informal) An individual regarded as clever, astute, or judicious.

plural of smart cookie

plural of smart arse

A computerized electrical grid which gathers and analyzes information from users to determine the most efficient and reliable operation of electricity distribution

(nautical, now historical) A certificate given to wounded seamen, entitling them to smart money. / An e-ticket.

A kind of guided missile. / (military aviation) A guided air-dropped bomb. / (video games) A weapon that damages or kills all enemies within a large area.

(simile) Very intelligent.