The customary certificate of national character which neutral merchant vessels are bound to carry in time of war; a passport for a vessel and cargo.

Synonym of letters rogatory

(law) A formal request from a court to a foreign court for some type of judicial assistance.

plural of bye-letter

(UK, historical) A postal letter carried only part of the way to the central post office, and delivered to its destination along the way.

(law) power of attorney

plural of letter warrant

(poetry) The repeated letter or letter sequence in alliteration.

plural of rhyme letter

A pair of scales for weighing a letter to determine the cost of postage.