Meaning of “hold sth/sb down” - Learner’s Dictionary

hold sth/sb down

phrasal verb with hold uk us /həʊld/ verb (past tense and past participle held)
PREVENT ESCAPING

to stop someone moving or escaping:

It took three officers to hold down the suspect.
KEEP LOW

to keep the cost of something at a low level:

to hold down prices/wages
hold down a job

to keep a job:

It's difficult for mothers to hold down a full-time job.

(Definition of “hold sth/sb down” from the Cambridge Learner’s Dictionary © Cambridge University Press)