charter (n.)
c. 1200, from Old French chartre (12c.) "charter, letter, document, covenant," from Latin chartula/cartula, literally "little paper," diminutive of charta/carta "paper, document" (see chart (n.)).
charter (v.)
early 15c., "provide with a charter," from charter (n.). Meaning "to hire" is attested from 1806. Related: Chartered; chartering.