| peak | |
| 1. n. A point; the sharp end or top of anything that terminates in a point; as, the peak, or front, of a cap. | |
| 2. n. The highest value reached by some quantity in a time period. | |
| The stock market reached a peak in September 1929. | |
| 3. n. (geography) The top, or one of the tops, of a hill, mountain, or range, ending in a point. | |
| They reached the peak after 8 hours of climbing. | |
| 4. n. (geography) The whole hill or mountain, especially when isolated. | |
| 5. n. (nautical) The upper aftermost corner of a fore-and-aft sail. | |
| peak-halyards | |
| peak-brails | |
| 6. n. (nautical) The narrow part of a vessel's bow, or the hold within it. | |
| 7. n. (nautical) The extremity of an anchor fluke; the bill. | |
| 8. n. (mathematics) A local maximum of a function, e.g. for sine waves, each point at which the value of y is at its maximum. | |
| 9. v. To reach a highest degree or maximum. | |
| Historians argue about when the Roman Empire began to peak and ultimately decay. | |
| 10. v. To rise or extend into a peak or point; to form, or appear as, a peak. | |
| 11. v. (nautical, transitive) To raise the point of (a gaff) closer to perpendicular. | |
| 12. adj. (MLE) Bad | |
| 13. adj. (MLE) Unlucky; unfortunate | |
| 14. v. (intransitive) To become sick or wan. | |
| 15. v. (intransitive) To acquire sharpness of figure or features; hence, to look thin or sickly. | |
| 16. v. (intransitive) To pry; to peep slyly. | |
| 17. n. alt form, peag, , wampum | |
| 18. v. misspelling of pique | |
