I. ə-ˈsīd adverb
Date: 14th century
1. : to or toward the side
stepped aside
2. : away from others or into privacy
pulled him aside
3. : out of the way especially for future use : away
putting aside savings
4. : away from one's thought or consideration
jesting aside
II. preposition
Date: 1592
obsolete : beyond , past
III. noun
Date: circa 1751
1. : an utterance meant to be inaudible to someone ; especially : an actor's speech heard by the audience but supposedly not by other characters
2. : a straying from the theme : digression