Source : Webster's Revised Unabridged Dictionary (1913)

Nonsuit \Non"suit`\, v. t. [imp. & p. p. {Nonsuited}; p. pr. &
   vb. n. {Nonsuiting}.] (Law)
   To determine, adjudge, or record (a plaintiff) as having
   dropped his suit, upon his withdrawal or failure to follow it
   up. ``When two are joined in a writ, and one is nonsuited.''
   --Z. Swift.