Definition of “shock” - Learner’s Dictionary

shock

noun uk us /ʃɒk/
SURPRISE [ C, U ]

B1 a big, unpleasant surprise:

We got a nasty shock when he gave us the bill.
Her death came as a terrible shock to him.
They are still in shock (= feeling the effect of a shock) from the accident.
ILLNESS [ U ]

a medical condition when someone is extremely weak because of damage to their body:

He went into shock and nearly died.
ELECTRICITY [ C ] (also electric shock)

a sudden, painful feeling that you get when electricity flows through your body

MOVEMENT [ C ]

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