(computing theory) A concise description of a regular formal language with notations for concatenation, alternation, and iteration (repetition) of subexpressions.

Language in any of a number of different modalities such as speech, sign or writing.

plural of express rifle

plural of express kidnapping

A method of abduction, mainly in Latin America, where a small immediate ransom is demanded.

An office where packages for an express are received or delivered.

plural of express office

(chiefly US) A traffic lane on a limited-access road, intended for faster traffic, that has even more limited access.

A large-calibre cartridge with adequate ballistics to kill big game.

plural of express lane