Meaning of “grip” - Learner’s Dictionary

grip

verb [ T ] uk us /ɡrɪp/ (present participle gripping, past tense and past participle gripped)
HOLD

B2 to hold something tightly:

She gripped his arm.
INTEREST

to keep someone's attention completely:

This trial has gripped the whole nation.
EMOTION

When an emotion grips you, you feel it very strongly:

[ often passive ] He was gripped by fear.

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