A / arrha
pronoun greek

arrha

fem. ae · neut. ōnis · gender feminine
and (also without aspiration and ), (the latter form ante-class.; cf. Gell. 17, 2, 21; in Cic. the word is never used), = ἀρραβών [from the Heb. from , to give security]
the money given to ratify a contract; earnest-money; purchase-money
the money given to ratify a contract, earnest-money, purchase-money, a pledge, an earnest (arrha is a part of the purchase-money, while pignus is a pledge to be restored when the contract, for security of which it is given, Las been performed, Isid. Orig. 5, 25).
arraboni has dedit quadraginta minas, Plaut. Most. 3, 1, 115; id. Rud. prol.… literal
Lit.: arraboni has dedit quadraginta minas, Plaut. Most. 3, 1, 115; id. Rud. prol. 46; id. Poen. 5, 6, 22: Ea relicta huic arrabonist pro illo argento, * Ter. Heaut. 3, 3, 42: tantus arrabo, Quadrig. ap. Gell. 17, 2, 20 (i. e. sexcentos obsides, Gell.): dederis mihi arrabonem, Vulg. Gen. 38, 17: pro arrabone dari, ib. ib. 38, 18.—Jestingly shortened into rabo: rabonem habeto, mecum ut hanc noctem sies, Plaut. Truc. 3, 2, 20 sq.
arrabo amoris, Plaut. Mil. 4, 1, 11; Dig. 18, 1, 35; Plin. 33, 1, 6, § 28; and… figuratively
Trop.: arrabo amoris, Plaut. Mil. 4, 1, 11; Dig. 18, 1, 35; Plin. 33, 1, 6, § 28; and so ironically: mortis arra, money given to physicians, Plin. 29, 1, 8, § 21.