Word Origin & History
peak"pointed top," 1530, variant of pike (2) "sharp point." Meaning "top of a mountain" first recorded 1634, though pike was used in this sense c.1400. Figurative sense is 1784. Meaning "point formed by hair on the forehead" is from 1833. The verb is first recorded 1577, in sense of "to rise in a peak;"
EXPAND meaning "reach highest point" first recorded 1958. The Peak in Derbyshire is O.E. Peaclond, apparently a reference to elf-denizen Peac "Puck."
peaked1835, from pp. of obsolete peak "look sickly or thin" (1550), perhaps from peak in sense of become "pointed" through emaciation.
COLLAPSE