Quick definitions from WordNet (talk)

▸ noun:  the act of giving a talk to an audience ("I attended an interesting talk on local history")
▸ noun:  an exchange of ideas via conversation ("Let's have more work and less talk around here")
▸ noun:  (`talk about' is a less formal alternative for `discussion of') discussion ("His poetry contains much talk about love and anger")
▸ noun:  idle gossip or rumor ("There has been talk about you lately")
▸ noun:  a speech that is open to the public
▸ verb:  express in speech ("She talks a lot of nonsense")
▸ verb:  exchange thoughts; talk with ("We often talk business")
▸ verb:  deliver a lecture or talk ("She will talk at Rutgers next week")
▸ verb:  reveal information ("If you don't oblige me, I'll talk!")
▸ verb:  use language ("The baby talks already")
▸ verb:  divulge confidential information or secrets ("Be careful--his secretary talks")
▸ name:  A surname (very rare: popularity rank in the U.S.: #45190)

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▸ Also see talk