Meaning of “shiver” - Learner’s Dictionary

shiver

verb [ I ] uk us /ˈʃɪvər/

B2 to shake because you are cold or frightened:

She shivered with cold.
shiver noun [ C ]

He felt a shiver run down his spine (= He felt afraid).

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