Meaning of “lower” - Learner’s Dictionary

lower

verb [ T ] uk us /ˈləʊər/
MOVE

B2 to move something to a low position:

They lowered the coffin into the grave.
REDUCE

B2 to reduce the amount of something:

I'll join if they lower the entrance fee.

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