Meaning of “stalk” - Learner’s Dictionary

stalk

verb uk us /stɔːk/

[ T ] to follow a person or animal closely and secretly, often to try to catch or attack them:

She claimed that the man had been stalking her for a month.
stalk out/off, etc

to walk in an angry or proud way:

She stalked out of the restaurant.

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