Wordnet 3.0
ADJECTIVE (1)
1. 
 of the highest quality; 
- Example: "an ace reporter"- Example: "a crack shot"- Example: "a first-rate golfer"- Example: "a super party"- Example: "played top-notch tennis"- Example: "an athlete in tiptop condition"- Example: "she is absolutely tops"[syn: ace, A-one, crack, first-rate, super, tiptop, topnotch, top-notch, tops(p)]
WordNet (r) 3.0 (2006):
top-notch
    adj 1: 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" [syn: ace, A-one, crack,
           first-rate, super, tiptop, topnotch, top-notch,
           tops(p)]