Describing a situation in which there are only two choices. / Describing a situation in which there is a choice between two different plans of action, but both together are not possible

Alternative form of either-or

Any one (of two). / Each of two; both. / (now rare) Any one (of more than two).

One or the other of two people or things. / (obsolete) Both, each of two or more.

(conjunctive, after a negative) As well.

Introduces the first of two (or occasionally more) options or possibilities, the second (or last) of which is introduced by “or”.

Regardless of what happens (out of two possible situations).

Able to use either (right or left) hand, often equally well; ambidextrous.

Synonym of hybrid offence

plural of either-way offence