(now offensive) Deaf and not able to speak.

(Cockney rhyming slang) bum (behind, bottom).

A species of death adder from Australia, taxonomic name Acanthophis antarcticus, known for its venomosity and speed.

plural of death zone

(US, originally in right-wing discourse, otherwise humorous) A fictitious government committee which is responsible for choosing which of various patients will receive healthcare, and which withholds life-saving treatment from some in order to reduce costs.

plural of dear sir

Any of several desserts largely consisting of a chocolate cake with a chocolate sauce.

plural of dead ringer

(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 death throe