peak

• enPR: pēk, IPA^(key): /piːk/
• Rhymes: -iːk
• Homophones: peek, peke, pique

From earlier peake, peek, peke, from Middle English *peke, *pek (attested in peked, variant of piked), itself an alteration of pike, pyke, pyk (“a sharp point, pike”), from Old English pīc, piic (“a pike, needle, pin, peak, pinnacle”), from Proto-Germanic *pīkaz (“peak”). Cognate with Dutch piek (“pike, point, summit, peak”), Danish pik (“pike, peak”), Swedish pik (“pike, lance, point, peak”), Norwegian pik (“peak, summit”). More at pike.

peak (plural peaks)

1. A point; the sharp end or top of anything that terminates in a point; as, the peak, or front, of a cap.
   • 2002, Joy of Cooking: All About Cookies →ISBN, page 29:

     A less risky method is to lift your whisk or beater to check the condition of the peaks of the egg whites; the foam should be just stiff enough to stand up in well-defined, unwavering peaks.

2. The highest value reached by some quantity in a time period.

   Synonyms: apex, pinnacle; see also Thesaurus:apex

   The stock market reached a peak in September 1929.

   • 2012 October 23, David Leonhardt, "," New York Times (retrieved 24 October 2012):

     By last year, family income was 8 percent lower than it had been 11 years earlier, at its peak in 2000, according to inflation-adjusted numbers from the Census Bureau.

3. (geography) The top, or one of the tops, of a hill, mountain, or range, ending in a point.

   Synonyms: summit, top

   They reached the peak after 8 hours of climbing.

4. (geography) The whole hill or mountain, especially when isolated.
   • 1898, Arnold Henry Savage Landor, In the Forbidden Land Chapter 62

     To the South we observed a large plain some ten miles wide, with snowy peaks rising on the farther side. In front was a hill projecting into the plain, on which stood a mani wall; and this latter discovery made me feel quite confident that I was on the high road to Lhassa.

5. (nautical) The upper aftermost corner of a fore-and-aft sail.

   peak-halyards

   peak-brails

6. (nautical) The narrow part of a vessel's bow, or the hold within it.
7. (nautical) The extremity of an anchor fluke; the bill.
8. (mathematics) A local maximum of a function, e.g. for sine waves, each point at which the value of y is at its maximum.

peak (third-person singular simple present peaks, present participle peaking, simple past and past participle peaked)

1. To reach a highest degree or maximum.

   Historians argue about when the Roman Empire began to peak and ultimately decay.

2. To rise or extend into a peak or point; to form, or appear as, a peak.
   • Holland

     There peaketh up a mighty high mount.

3. (nautical, transitive) To raise the point of (a gaff) closer to perpendicular.

• culminate

peak (comparative more peak, superlative most peak)

1. (MLE) Bad
   • 2015, “Its Peak”, performed by Tinie Tempah (featuring Stormzy and Bugzy Malone):

     When they're tryna get the girl to the crib and she leaves, it's peak / Tryna keep it discrete and she tweets, it's peak / See me rolling with 20 man deep, it's peak / Yo rudeboy, pull up, repeat, it's peak

2. (MLE) Unlucky; unfortunate

• (bad): hench; See also Thesaurus:bad
• (unlucky): See also Thesaurus:unlucky

Unknown.

peak (third-person singular simple present peaks, present participle peaking, simple past and past participle peaked)

1. (intransitive) To become sick or wan.
2. (intransitive) To acquire sharpness of figure or features; hence, to look thin or sickly.
   • Shakespeare

     Dwindle, peak, and pine.

3. (intransitive) To pry; to peep slyly.

   (Can we find and add a quotation of Shakespeare to this entry?)

peak (uncountable)

1. Alternative form of peag (“wampum”)

peak (third-person singular simple present peaks, present participle peaking, simple past and past participle peaked)

1. Misspelling of pique.

• Paek, kape