First of exchange
Defined in 2 dictionaries — Ballentine's (1916), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
The first of a set of bills of exchange, drawn in duplicate Qe triplicate, the honor of any one of which avoids the others.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Where a set of bills of exchange is drawn in duplicate or triplicate, for greater safety in their transmission, ali being of the same tenor, and the intention being that the acceptance and payment of any one of them (the first to arrive safely) shall cancel the others of the set, they are called individually the "first of exchange," "second of exchange," etc. See Bank of Pittsburgh v. Neal, 22 How. 96, 110, 16 In Ed. 323. As to first 'Cousin," "Distress," "Lien," and "Mortgage," see those titles.
Defined under First in Black's Law Dictionary.