The cardinal number occurring after el and before do one in a duodecimal system. Written 10, decimal value 12.

(computing, historical) Acronym of Disk Operating System, a family of disk-based operating systems. / (US) Initialism of Department of State.

(military) Initialism of date of service. / (military) Initialism of date of separation. / (computing, Internet) Initialism of denial of service. / (sciences) Initialism of density of states.

(transitive, colloquial) To kill or end. / (transitive, colloquial) To exhaust, to tire out. / (transitive, colloquial) To damage or injure.

Used other than figuratively or idiomatically: see do, it. / (colloquial) To be appealing or suitable. / (slang, chiefly used in the past tense) To do something exceptionally foolish or unacceptable.

(computing, Internet) A denial-of-service attack.

(teaching) Director of Studies; someone in charge of the academic side of a school including training teachers and deciding course materials.

(transitive, computing, Internet) To commit a denial-of-service attack against.

A deed or action, especially when somebody is held responsible for it.

present participle of do