D defs.my
Entry 5 senses Webster, 1913

Set-off

· Set·-off · IPA
01 n. That which is set off against another thing; an offset.
  1. 1.
    That which is set off against another thing; an offset.
    “I do not contemplate such a heroine as a set-off to the many sins imputed to me as committed against woman.” — D. Jerrold.
  2. 2.
    That which is used to improve the appearance of anything; a decoration; an ornament.
  3. 3.
    A counterclaim; a cross debt or demand; a distinct claim filed or set up by the defendant against the plaintiff's demand.(Law)
  4. 4.
    Same as Offset, n., 4.(Arch.) See: Offset
  5. 5.
    See Offset, 7.(Print.) See: Offset
Syn. Set-off, Offset.
Offset originally denoted that which branches off or projects, as a shoot from a tree, but the term has long been used in America in the sense of set-off. This use is beginning to obtain in England; though Macaulay uses set-off, and so, perhaps, do a majority of English writers.