Meaning of “talk” - Learner’s Dictionary

talk

noun uk us /tɔːk/
CONVERSATION [ C ]

B1 a conversation between two people, often about a particular subject:

I had a long talk with Chris at the weekend about going to university.
PEOPLE [ U ]

a situation in which people talk about what might happen or be true:

There's been some talk of possible job losses.
There's been a lot of talk about green issues lately.
TO A GROUP [ C ]

B2 an occasion when someone speaks to a group of people about a particular subject:

Someone's coming to the school to give a talk about road safety.

(Definition of “talk noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)