(uncountable) discussion about one's trade, business, or employment that only others in the same field can understand.

Alternative spelling of self-talk

Talk to oneself, whether silent or aloud.

(idiomatic) It is easy to make boastful or unrealistic statements which are not backed by actions or evidence.

Alternative spelling of talk radio

A radio programme format with discussions about topical issues.

(idiomatic) Alternative form of speak of the devil

plural of talking head

Simple, honest speaking.

(US) To talk aggressively or boisterously. / To slander.