1 [mass noun] the action of pursuing someone or something:the cat crouched in the grass in pursuit of a birdthose whose business is the pursuit of knowledge
[count noun] a cycling race in which competitors set off from different parts of a track and attempt to overtake one another: [as modifier]:the Olympic pursuit champion
Physiology the action of the eye in following a moving object.
2an activity of a specified kind, especially a recreational or sporting one:a whole range of leisure pursuits
give pursuit
(of a person, animal, or vehicle) start to chase another:three cavalry companies gave pursuit