· the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch at one"

Synonym(s): one, 1, I, single, unity

Hypernym(s): digit, figure

· one of four playing cards in a deck having a single pip on its face

Hypernym(s): playing_card

· someone who is dazzlingly skilled in any field

Synonym(s): adept, champion, sensation, maven, mavin, virtuoso, genius, hotshot, star, superstar, whiz, whizz, wizard, wiz

Hypernym(s): expert

· proteolytic enzyme that converts angiotensin I into angiotensin II

Synonym(s): angiotensin_converting_enzyme, angiotensin-converting_enzyme, ACE

Hypernym(s): protease, peptidase, proteinase, proteolytic_enzyme

· a major strategic headquarters of NATO; safeguards an area extending from Norway to Turkey

Synonym(s): Allied_Command_Europe, ACE

Hypernym(s): headquarters

· a serve that the receiver is unable to reach

Hypernym(s): serve, service

· succeed at easily; "She sailed through her exams"; "You will pass with flying colors"; "She nailed her astrophysics course"

Synonym(s): breeze_through, pass_with_flying_colors, sweep_through, sail_through, nail

Hypernym(s): pass, make_it

· score an ace against; "He aced his opponents"

Hypernym(s): score, hit, tally, rack_up

· play (a hole) in one stroke

Hypernym(s): play

· serve an ace against (someone)

Hypernym(s): serve

· of the highest quality; "an ace reporter"; "a crack shot"; "a first-rate golfer"; "a super party"; "played top-notch tennis"; "an athlete in tiptop condition"; "she is absolutely tops"

Synonym(s): A-one, crack, first-rate, super, tiptop, topnotch, top-notch, tops