(compilers) Instructions that, when executed, have no effect on the running of the program. / (programming) A portion of source code that will never be executed as part of the running program.

plural of dead ringer

(humorous) Unconscious and near death.

plural of dead end

plural of dead-end

Third-person singular simple present indicative form of dead-end

(idiomatic, slang) An empty container, usually a bottle or can which contained an alcoholic beverage.

Misspelling of deadline.

Either dead or alive. / Used to indicate someone is being sought for some kind of punishment or reprimand, and that (s)he may be killed in the process of finding, as if this was reasonable punishment.

(simile) Undoubtedly and unquestionably dead. / (simile) Very much out of date.