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>2archaic : either3archaic : whether4—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