underchin

English

Etymology

under- +‎ chin

Noun

underchin (plural underchins)

  1. The underpart of the chin.
    • 1885, Edward Sylvester Ellis, Ned in the block-house, page 163:
      The others, however, were not much improvement as respects looks: one had a projecting underchin, the other a very broad face, and the three were anything but pleasing in appearance.