Definition of peak

• n. - A point; the sharp end or top of anything that terminates in a point; as, the peak, or front, of a cap.
• n. - The top, or one of the tops, of a hill, mountain, or range, ending in a point; often, the whole hill or mountain, esp. when isolated; as, the Peak of Teneriffe.
• n. - The upper aftermost corner of a fore-and-aft sail; -- used in many combinations; as, peak-halyards, peak-brails, etc.
• n. - The narrow part of a vessel's bow, or the hold within it.
• n. - The extremity of an anchor fluke; the bill.
• v. i. - To rise or extend into a peak or point; to form, or appear as, a peak.
• v. i. - To acquire sharpness of figure or features; hence, to look thin or sicky.
• v. i. - To pry; to peep slyly.
• v. t. - To raise to a position perpendicular, or more nearly so; as, to peak oars, to hold them upright; to peak a gaff or yard, to set it nearer the perpendicular.