plural of doing / regular activities / social events / (Australia, vulgar, dated) sewage.

A move in square dancing in which two dancers face each other, then step forward and left until they have right shoulders adjacent, then move to a position where they are back to back, then move to have left shoulders adjacent, then return to facing each other.

Back to back.

(US, colloquial, usually childish) Excrement, feces, dung.

plural of do do

(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.

(auxiliary) A syntactic marker in a question whose main verb is not another auxiliary verb or be. / (auxiliary) A syntactic marker in negations with the indicative and imperative moods.

(UK, informal) A party, celebration, social function; usually of moderate size and formality. / (informal) Clipping of hairdo. / (chiefly fossilized) Something that can or should be done.

(music) A syllable used in solfège to represent the first and eighth tonic of a major scale.