verb
(intransitive) To act in a manner such that one has fun; to engage in activities expressly for the purpose of recreation or entertainment.
(intransitive, especially with 'with'; see also play with) To toy or trifle; to act with levity or thoughtlessness; to be careless.
(transitive, intransitive) To perform in (a sport); to participate in (a game).
(intransitive) To contend or fight using weapons, both as practice or in real life-or-death combats; to engage in martial games; to joust; to fence
(intransitive, copulative) To act or behave in a stated way.
(transitive) To act as (the indicated role).
(transitive, intransitive) To produce sound (especially music), moving pictures, or theatrical performance.
(transitive, intransitive) To move briskly, sweepingly, back and forth, in a directed manner, etc.
(transitive) To bring into action or motion; to exhibit in action; to execute or deploy.
(transitive) To handle or deal with (a matter or situation) in a stated way.
(transitive) To handle or deal with (something) in a calculating manner intended to achieve profit or gain.
(intransitive) To be received or accepted (in a given way); to go down.
To gamble.
(transitive) To keep in play, as a hooked fish in order to land it.
(transitive, colloquial) To manipulate, deceive, or swindle.
(African-American Vernacular, intransitive) To kid; to joke; to say something for amusement; to act, or to treat something, unseriously.
(intransitive) To take part in amorous activity; to make love; see also play around.
For additional senses in various idiomatic phrases, see the individual entries, such as play along, play at, play down, play off, play on, play out, play to, play up, etc.
noun
(uncountable, formerly countable) Activity for amusement only, especially among the young.
(uncountable) Similar activity in young animals, as they explore their environment and learn new skills.
(uncountable) The conduct, or course, of a game.
(uncountable, sports, with certain prepositions, also figurative) The sphere or circumstance in which a playing implement, such as a ball, is available to be played (see also in play, out of play).
(uncountable) An individual's performance in a sport or game.
(countable) A short sequence of action within a game.
(countable) A literary composition, intended to be represented by actors impersonating the characters and speaking the dialogue.
(countable) A theatrical performance featuring actors.
(countable) An attempt to move forward, as in a plan or strategy, for example by a business, investor, or political party.
(countable) A geological formation that contains an accumulation or prospect of hydrocarbons or other resources.
(uncountable) Movement (of a pattern of light etc.)
(uncountable) Freedom to move.
(uncountable, informal) Sexual activity or sexual role-playing.
(countable) An instance of watching or listening to media.
(countable, uncountable) An instance or instances of causing media to be watched or heard, such as by broadcasting.
(countable) A button that, when pressed, causes media to be played.
(countable) An instance of wordplay.
(archaic, now usually in compounds) Activity relating to martial combat or fighting.