Quantum Meruit
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
As much as he deserved. In pleading. The common count in an action of assumpsit for work and labor, founded on an implied assumpsit or promise on the part of the defendant to pay the plaintiff os much as he reasonably deserved to have for his labor.
3 Bl. Comm. 161; 1 Tidd, Pr. 2.