Meaning of “top” - Learner’s Dictionary

top

verb [ T ] uk us /tɒp/ (present participle topping, past tense and past participle topped)

to be better or more than something:

I don't think film makers will ever top 'Gone With The Wind'.
be topped with sth

to be covered with something:

lemon tart topped with cream

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