A party or person besides the two primarily concerned, as in a law case or the like. Also attrib.
1818. Scott, Rob Roy, xiii. Speak as you would to an unconcerned third party.
1853. Maurice, Proph. & Kings, xx. 343. It appears to be a narrative written by a third party.
1883. Wharton’s Law Lex., s.v., ‘A Third party’ may be introduced into an action by a defendant claiming an indemnity, or any other remedy over against him, under Jud. Act, 1873, s. 24. sub. 3, and Order XVI., Rules 17, 19.
1883. Law Times, 20 Oct., 407/2. The rules relating to third-party procedure … are a great improvement upon the former rules.
1905. Daily Chron., 12 Sept., 3/2. The largest third-party vote, with one exception, since the Civil War.
