(ē′thər-ôr′, ī′thər-)n. A strictly limited choice or division between only two options.adj. Of or characterized by a choice or division limited strictly between two options: found ourselves in an either-or situation.
either-or
adjpresenting an unavoidable need to choose between two alternatives: an either-or situation.
ei′ther-or′
adj. 1. restricted in choice to two options: an either-or situation.n. 2. a choice having only two options. [1925–30]