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.