or - definition of or from YourDictionary.com

or (ôr)

a coordinating conjunction introducing an alternative; specif.,

introducing the second of two possibilities beer or wine
introducing any of the possibilities in a series, but usually used only before the last apples or pears or plums; apples, pears, or plums
introducing a synonymous word or phrase botany, or the science of plants
introducing the second of two possibilities when the first is introduced by either or whether either go or stay; decide whether to go or stay
Old Poet. substituted for either or whether as the first correlative “or in the heart or in the head”

Etymology: ME, in form a contr. of other, auther, either, but actually < OE oththe (in āther ... oththe, either ... or)

or (ôr)

Now Chiefly Dial. before; ere

Etymology: ME < OE ār, var. of ær, ere: see ere

or (ôr)

noun

Heraldry the representation of the metal gold: indicated in engravings by small black dots on a white field

Etymology: Fr < L aurum, gold: for IE base see east

conj.

A suggestion of choice
or only, or but, as an alternative, as a choice, as a substitute, on the other hand, in turn, conversely, in other words, or else, in preference to, preferentially; see also either.
Antonyms neither*, nor*, without choice.
A suggestion of correction
or not, or not exactly, in reverse, reversing it, on the contrary, contrary to, oppositely, or rather, instead of, correctly speaking; see also instead, rather 2.
A suggestion of approximation
roughly, about, practically; see approximately.

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