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A Dictionary of Law · Henry Campbell Black · 1891
A Dictionary of Law
(Lat. Ido that you may give.) A species of contract in the civil law (being one of the innominate contracts) which occurs when a man agrees to perform anything for a price either specific. ally mentioned or left to the determination of the law to set a value on it; as whena servant hires himself to his muster for certain wages or an agreed sum of money.
2 Bl. Comm. 445.