n A loud burst of voice or voices; a vehement and sudden outcry, especially that of a multitude expressing joy, triumph, exultation, or animated courage.
n (UK|Australia|New Zealand|slang) A round of drinks in a pub; the turn to pay the shot or scot; an act of paying for a round of drinks.
n (UK|Australia|jargon|slang) A call-out for an emergency services team.
v (intransitive) To utter a sudden and loud outcry, as in joy, triumph, or exultation, or to attract attention, to animate soldiers, etc.
v (transitive) To utter with a shout; to cry; -- sometimes with out; as, to shout, or to shout out, a man's name.