1. To or toward the side: step aside.

2. Out of one's thoughts or mind: put my doubts aside.

3. Apart: a day set aside for relaxing.

4. In reserve; away: put a little money aside.

1. A piece of dialogue intended for the audience and supposedly not heard by the other actors on stage.

2. A remark made in an undertone so as to be inaudible to others nearby.

3. A parenthetical departure; a digression.