(1) The hemisphere that includes North America and South America
(2) The countries of (originally) Europe and (now including) North America and South America
WiktionaryText
Etymology
From , from , from
Noun
The part of the horizon where the sun last appears in the evening; that part of the earth towards the sunset; the west; – opposed to orient. Specifically, in former times, Europe as opposed to Asia; now, also, the Western hemisphere.
