Abbreviation of spinal muscular atrophies.

plural of SMA

Initialism of suck my ass.

(military, US) Initialism of Sergeant Major of the Army. / (anatomy) Initialism of supplementary motor area. / (anatomy) Initialism of superior mesenteric artery.

(software) Initialism of Service Management Automation (a set of tools for Microsoft Azure)

(slang) Drunk.

simple past tense and past participle of smash

The sound of a violent impact; a violent striking together. / (Britain, colloquial) A traffic collision. / (colloquial) Something very successful or popular (as music, food, fashion, etc).

(transitive) To break (something brittle) violently. / (intransitive) To be destroyed by being smashed. / (transitive) To hit extremely hard. / (transitive, figuratively) To ruin completely and suddenly.

Serving to smash (something). / (originally US, now Britain and Ireland, slightly dated) Wonderful, very good or impressive.