adverb

1. from any given place; off to run away
2. in another place, esp. the proper place to put one's tools away
3. in another direction look away, turn away
4. by a considerable time or distance; far away behind
5. so as to be removed; aside to clear snow away, to get away from the subject
6. from one's possession to give away a secret
7. out of existence the sound faded away
8. at once fire away
9. without stopping; continuously he worked away all night
10. into action or movement away we go!

Etymology: ME < OE aweg < phr. on weg < on, on + weg, way, in the sense “from this (that) place”

adjective

1. not present; absent; gone he is away
2. at a distance a mile away
3. ☆ played on a competing team's field, court, etc. an away game
4. ☆ Baseball out one away in the last half of the 4th
5. Golf designating the player (or the ball) that is farthest from the cup and hence is required to shoot (or be shot) first

interjection

1. begone
2. let's go