From WordNet (r) 3.0 (2006):
peak
n 1: the most extreme possible amount or value; "voltage peak"
[syn: extremum, peak]
2: the period of greatest prosperity or productivity [syn:
flower, prime, peak, heyday, bloom, blossom,
efflorescence, flush]
3: the highest level or degree attainable; the highest stage of
development; "his landscapes were deemed the acme of beauty";
"the artist's gifts are at their acme"; "at the height of her
career"; "the peak of perfection"; "summer was at its peak";
"...catapulted Einstein to the pinnacle of fame"; "the summit
of his ambition"; "so many highest superlatives achieved by
man"; "at the top of his profession" [syn: acme, height,
elevation, peak, pinnacle, summit, superlative,
meridian, tiptop, top]
4: the top or extreme point of something (usually a mountain or
hill); "the view from the peak was magnificent"; "they
clambered to the tip of Monadnock"; "the region is a few
molecules wide at the summit" [syn: peak, crown, crest,
top, tip, summit]
5: a V shape; "the cannibal's teeth were filed to sharp points"
[syn: point, tip, peak]
6: the highest point (of something); "at the peak of the
pyramid" [syn: vertex, peak, apex, acme]
7: a brim that projects to the front to shade the eyes; "he
pulled down the bill of his cap and trudged ahead" [syn:
bill, peak, eyeshade, visor, vizor]
v 1: to reach the highest point; attain maximum intensity,
activity; "That wild, speculative spirit peaked in
1929";"Bids for the painting topped out at $50 million"
[syn: top out, peak] [ant: bottom out]