What is Letter Of Credit?

Legal Definition
In modern business practice, a letter of credit is a written undertaking from a bank to pay a beneficiary against the delivery of a specified set of documents.
-- Wikipedia
Legal Definition
Letter that a bank issues that authorizes the bearer to draw a certain amount of money from the bank, its branches, or other banks or agencies with which it is associated. In the law of secured transactions, letters of credit are not accounts.
Legal Definition
Contracts. An open or sealed letter, from a merchant in one place, directed to another, in another place or country, requiring him that if a person therein named, or the bearer of the letter, shall have occasion to buy commodities, or to want money to any particular or unlimited amount, either to procure the same, or to pass his promise, bill, or other engagement for it, the writer of the letter undertaking to provide him the money for the goods, or to repay him by exchange, or to give him such satisfaction as he shall require, either for himself or the bearer of the letter. 3 Chit Com. Law, 336; and see 4 Chit. Com. Law, 259, for a form of such letter.

2. These letters are either general or special; the former is directed to the writer's friends or correspondents generally, where the bearer of the letter may happen to go; the latter is directed to some particular person. When the letter is presented to the person to whow it is addressed, he either agrees to comply with the request, in which case he immediately becomes bound to fulfil all the engagements therein mentioned; or he refuses in which case the bearer should return it to the giver without any other proceeding, unless, indeed, the merchant to whom the letter is directed is a debtor of the merchant who gave the letter, in which case he should procure the letter to be protested. 3 Chit. Com. Law, 337; Malyn, 76; 1 Beaw. Lex Mer. 607; Hall's Adm. Pr. 14; 4 Ohio R. 197; 1 Wllc. R. 510.

3. The debt which arises on such letter, in its simplest form, when complied with, is between the mandator and the mandant; though it may be so conceived as to raise a debt also against the person who is supplied by the mandatory. 1. When the letter is purchased with money by the person wishing for the foreign credit; or, is granted in consequence of a check on his cash account, or procured on the credit of securities lodged with the person who granted it; or in payment of money due by him to the payee; the letter is, in its effects, similar to a bill of exchange drawn on the foreign merchant. The payment of the money by the person on whom the letter is granted raises a debt, or goes into account between him and the writer of the letter; but raises no debt to the person who pays on the letter, against him to whom the money is paid. 2. When not so purchased, but truly an accommodation, and meant to raise a debt on the person accommodated, the engagement, generally is, to see paid any advances made to him, or to guaranty any draft accepted or bill discounted and the compliance with the mandate, in such case, raises a debt, both against the writer of the letter, and against the person accredited. 1 Bell's Com. 371, 6th ed. The bearer of the letter of credit is not considered bound to receive the money; he may use the letter as he pleases, and he contracts an obligation only by receiving the money. Poth. Contr. de Change, 237.
-- Bouviers Law Dictionary
Legal Definition
An open or sealed letter, from a merchant in one place, directed to another, in another place or country, requiring him, if a person therein named, or the bearer of the letter, shall have occasion to buy commodities, or to want money to any particular or unlimited amount, either to procure the same or to pass his promise, bili, or bond for it, the writer of the letter undertaking to provide him the money for the goods, or to .repay him by exchange, or to give him such satisfaction as he shall require, either for himself, or the bearer of the letter. 3 Chit. Com. law, 336. A letter of credit is a written instrument, addressed by one person to another, requesting the latter to give credit to the person in whose favor it is drawn. Civ. Code Cal. § 2858. Mechanics' Bank v. New York & N. H. in Co., 13 N. Y. 630; Pollock v. Helm, 54 Miss. 5, 28 Am. Rep. 342; Lafargue v. Harrison, 70 Cal. 380,9 Pac. 261, 59 Am. Rep. 416. General and special. A general letter of credit is one addressed to any and nil persons, without naming any one in particular, while a special letter of credit is addressed to a particular individual, firm, or corporation by name. Birckhead v. Brown. 5 Hill (N. Y.) 642; Civ. Code Mont. 1895, § 3713.
-- Black's Law Dictionary
Legal Definition
A letter requesting one to pay money or give credit to a third party and promising to repay or guarantee the same. See 70 Cal. 380, 59 Am. Rep. 416, 9 Pac. 259, 11 Pac. 636.
-- Ballentine's Law Dictionary