Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

arrha, ae, f., and arrhăbo (also without aspiration arra and arrăbo), ōnis, m. (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, 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).

  1. I. 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.
  2. II. 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.