Webster's Revised Unabridged Dictionary · 1913

Bonus

Bonus (bō"nus) , noun

[Latin bonus good. Compare Bonny.]

1.
(Law) A premium given for a loan, or for a charter or other privilege granted to a company; as the bank paid a bonus for its charter. — Bouvier
2.
An extra dividend to the shareholders of a joint stock company, out of accumulated profits.
3.
Money paid in addition to a stated compensation.