third party noun
law : someone who is not one of the two main people involved in a legal agreement but who is still affected by it in some way
: a person other than the principals <a third party to a divorce proceeding> <insurance against injury to third parties>
a : a major political party operating over a limited period of time in addition to two other major parties in a nation or state normally characterized by a two-party system
b : minor party
First Known Use of THIRD PARTY
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