The definition of other is the remaining or different one.(adjective)
An example of other is someone choosing between two people in a line-up and saying it wasn't the man they're pointing at but the man standing next to him, the other man.
See other in Webster's New World College Dictionary
Origin: ME < OE, akin to Ger ander, Goth anthar < IE *anteros, the other of two (< base *an, there + compar. suffix) > Sans ántara-
See other in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old English ōther; see al-1 in Indo-European roots.
Learn more about other