Definition of "ace"
ace1
/eɪs/
noun
plural aces
verb
third-person singular simple present aces, present participle acing, simple past and past participle aced
adjective
comparative more ace, superlative most ace
(UK, slang) Excellent.
ace2
/eɪs/
adjective
comparative more ace, superlative most ace
(slang) Asexual, not experiencing sexual attraction.