D defs.my
Entry 1 sense Webster, 1913

Emargination

· E·mar·gi·na·tion · IPA
01 n. The act of notching or indenting the margin, or the state of being so notched; also, a notch or shallow sinus in a margin.
  1. 1.
    The act of notching or indenting the margin, or the state of being so notched; also, a notch or shallow sinus in a margin.