Meaning of ACE in English

ACE

■ noun

1》 a playing card with a single spot on it, the highest card in its suit in most games.

2》 informal a person who excels at a particular activity.

3》 Tennis a service that an opponent is unable to return.

4》 Golf a hole in one.

■ adjective informal very good.

■ verb informal

1》 (in tennis) serve an ~ against.

2》 Golf score an ~ on (a hole).

3》 N. Amer. achieve high marks in (a test or exam).

Phrases

~ up one's sleeve (or N. Amer. in the hole ) something effective kept in reserve.

hold all the ~s have all the advantages.

within an ~ of very close to.

Origin

ME (denoting the ‘one’ on dice): via OFr. from L. as 'unity, a unit'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.