n (attributive) Impromptu or ad hoc, especially of sports games.
n An instance of approaching someone and engaging in romantic flirtation and courting with the intent to pursue romance, a date, or a sexual encounter. See also 'pick-up line', 'pick-up joint', 'pickup artist'.
n (video games) An item that can be picked up by the player, conferring some benefit or effect; a power-up.
n (US|Canada) The act of a challenging party or candidate winning an electoral district held by an incumbent party or candidate. See also 'gain'