talking

Concise Oxford English Dictionary © 2008 Oxford University Press:
talk/tɔːk/

▶verb

• 1 speak in order to give information or express ideas or feelings; communicate by speech.

  ■ have the power of speech.

  ■ (talk something over/through) discuss something thoroughly.

  ■ (be talking) informal be discussing in specified terms: we're talking big money.

  ■ gossip.

• 2 (talk someone round) convince someone to adopt a specific point of view.

  ■ (talk someone into/out of) persuade or dissuade someone to or from.

  ■ (talk something out) Brit. (in Parliament) block the course of a bill by prolonging discussion to the time of adjournment.

• 3 (talk back) reply defiantly or insolently.

• 4 (talk down to) speak condescendingly to.

▶noun

• 1 conversation; discussion.

  ■ speculation or gossip.

  ■ (the talk of) a current subject of widespread gossip or speculation in.

• 2 an address or lecture.

• 3 (talks) formal discussions or negotiations.

– phrases
you can't (or can) (N. Amer. shouldn't or should) talk informal used to convey that a criticism made applies equally well to the person making it.
look (or hark) who's talking another way of saying you can't talk.
now you're talking informal expressing enthusiastic agreement.
talk the hind leg off a donkey Brit. informal talk incessantly.
talk nineteen to the dozen see dozen.
talk the talk informal speak in a way intended to convince or impress.

– derivatives
talker noun.

– origin ME: from the Gmc base of tale or tell1.