Main Entry: ¹or

Pronunciation: \ər, ˈȯr, Southern also ˈär\

Function: conjunction

Etymology: Middle English, alteration of other, alteration of Old English oththe; akin to Old High German eddo or

Date: 13th century

1 —used as a function word to indicate an alternative <coffee or tea> <sink or swim>, the equivalent or substitutive character of two words or phrases <lessen or abate>, or approximation or uncertainty <in five or six days>
2 archaic : either
3 archaic : whether
4 —used in logic as a sentential connective that forms a complex sentence which is true when at least one of its constituent sentences is true — compare disjunction