n. (c./u.)Noun (Countable/Uncountable)An instant message.I sent him an imm to see if he was coming to the party.
v.t.Transitive VerbTo send someone an instant message.I'll imm you the details later.
n. (c./u.)Noun (Countable/Uncountable)Abbreviation for immunoglobulin.The patient's imm levels were elevated.