Dictionary.net

Com. law. That which is done by one merchant or other person for the convenience of some other, by accepting or endorsing his paper, or by lending him his notes or bills.

In general the parties who have drawn, endorsed or accepted bills or other commercial paper for the accommodation, of others, are, while in the hands of a holder who received them before they became due, other than the person for whom the accomodation was given, responsible as if they had received full value. Chit. Bills, 90; 91. See 4 Cranch, 141; 1 Ham. 413; 7 John. 361; 15 John. 355, 17 John. 176; 9 Wend. 170; 2 Whart. 344; 5 Wend. 566; 8 Wend. 437; 2 Hill, S. C. 362; 10 Conn. 308; 6 Munfd. 381.