Meaning of “level” - Learner’s Dictionary

level

verb [ T ] uk us /ˈlevəl/ (present participle mainly UK levelling, past tense and past participle levelled, present participle US leveling, past tense and past participle leveled)
MAKE FLAT

to make something flat:

He levelled the wet cement before it set.
DESTROY

to completely destroy a building:

Artillery fire levelled the town.

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