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1. Oxford American Dictionary

   peak

   • IPA[pēk]

   美式

   • n.
     the pointed top of a mountain；a mountain, especially one with a pointed top
   • v.
     reach a highest point, either of a specified value or at a specified time
   • adj.
     greatest; maximum；characterized by maximum activity or demand

   • verb: peak, 3rd person present: peaks, gerund or present participle: peaking, past tense: peaked, past participle: peaked

   • noun: peak, plural noun: peaks

2. • 釋義

   n.

   名詞

   • 1. the pointed top of a mountain the snowy peaks rose against the blue of a cloudless sky 同義詞 summit, top, crest, pinnacle, mountaintop, ... 更多spire, heights, brow, apex, crown, tip, cap, vertex, acme, zenith, apogee
   • ▪ a mountain, especially one with a pointed top the rocky outcrops of peaks such as the Cassongrat offer a challenge to rock climbers 同義詞 mountain, hill, height, alp, aiguille, ... 更多serac, puy, crag, tor, inselberg, bluff, scarp, escarpment, eminence, prominence, elevation, ridge, range, massif, sierra, cordillera, ben, Munro, law, berg, jebel, archaicmount
   • ▪ a projecting pointed part or shape whisk 2 egg whites to stiff peaks
   • ▪ a point in a curve or on a graph, or a value of a physical quantity, higher than those around it a slight increase in velocity provides a second peak on the general velocity curve
   • ▪ the point of highest activity, quality, or achievement anyone who saw Jones at his peak looked upon genius 同義詞 height, high point/spot, pinnacle, summit, top, ... 更多highlight, climax, culmination, consummation, epitome, apex, zenith, ascendancy, crowning point, peak of perfection, acme, meridian, apogee, prime, heyday, ne plus ultra, nonpareil, best part, perfection, top form, highest level反義詞 bottom, nadir, trough
   • ▪ a stiff brim at the front of a cap. 同義詞 brim, visor
   • ▪ the narrow part of a ship's hold at the bow or stern.
   • ▪ the upper, outer corner of a sail extended by a gaff.

   v.

   動詞

   • 1. reach a highest point, either of a specified value or at a specified time its popularity peaked in the 1940s the rate of increase peaked at 34 percent last autumn

   adj.

   形容詞

   • 1. greatest; maximum he did not expect to be anywhere near peak fitness until Christmas
   • ▪ characterized by maximum activity or demand at peak hours, traffic speeds are reduced considerably
   • ▪ referring to the point at which the specified thing is at its highest level of popularity just when we think we've reached peak beard, the trend is showing no signs of slowing down