Spoil

Boyd’s Bible Dictionary:

Plunder seized by violence, as the spoils of an army or of bandits
(1 Sam. 30:19-22); but in Ex. 3:22, the sense is that of recovery without violence of unjustly taken property. David instituted very strict regulations for the division of spoils of war among his soldiers (1 Sam. 30:20-25).

Concise Bible Dictionary:

The booty that was seized upon by an army when a city was taken. Except when forbidden by God, as in the case of Jericho, it was considered a lawful prize; and it was thus the Israelites suffered when their cities were captured by their enemies (Deut. 20:14; 2 Kings 21:14; Isa. 42:22).

From Manners and Customs of the Bible:

Psalm 10:8. He sitteth in the lurking places of the villages: in the secret places doth he murder the innocent.
This is an accurate description of the habit of the Bedawin of the present day. They watch for booty in villages, or “in the wilderness,” (see Jeremiah 3:2,) anywhere where they can be hidden from view and where they may hope to find an unwary passerby. They do not hesitate to add murder to robbery if, in their opinion, necessity demands it.
See also Psalm 56:6; Proverbs 1:11; Jeremiah 5:26.