Meaning : Far away from home or one's usual surroundings.
Example :
Looking afield for new lands to conquer.
Synonyms : abroad
Meaning : In or into a field (especially a field of battle).
Example :
The armies were afield, challenging the enemy's advance.
Unlawful to carry hunting rifles afield until the season opens.
Meaning : Off the subject. Beyond the point at issue.
Example :
Such digressions can lead us too far afield.