PEAK (2)

peak (2). Peak, v.i. to look sickly or meanly, to sneak, to raise a yard or gaff

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Peak, v. i. [imp. & p. p. Peaked (pēkt); p. pr. & vb. n. Peaking.] 1. 1. To rise or extend into a peak or point; to form, or appear as, a peak.
There peaketh up a mighty high mount. Holand. 2. 2. To acquire sharpness of figure or features; hence, to look thin or sickly. “Dwindle, peak, and pine.” Shak.
3. 3. [[Cf. Peek.]] To pry; to peep slyly. Shak.
Peak arch (Arch.), a pointed or Gothic arch.