D defs.my
Entry 1 sense Webster, 1913

To-name

/(to͞o"nām`)/ · To·-name · IPA
01 n. A name added, for the sake of distinction, to one's surname, or used instead of it.
  1. 1.
    A name added, for the sake of distinction, to one's surname, or used instead of it.[Scot.]