Lewis Short
dextĕra | dextra (noun F) : or , , (as in most langg.; cf. Gr. δεξιά, Germ. die Rechte, etc.; sc. manus)
* The right hand (freq. a sign of greeting, of fidelity; a symbol of strength, courage, etc.).
* Prop.: cedo sis dexteram,Plaut. Poen. 1, 2, 102; Ter. Heaut. 3, 1, 84: quod ego te per hanc dextram oro,id. And. 1, 5, 54; cf.: per dexteram te istam oro, quam, etc.,Cic. Deiot. 3; cf. also Sall. J. 10, 3; Hor. Ep. 1, 7, 94 al.; and: dexterae, quae fidei testes esse solebant,Cic. Phil. 11, 2, 5: fidem more Persarum dextra dare,Nep. Dat. 10, 1: vos libertatem atque patriam in dextris vostris portare,Sall. C. 58, 8; cf. Verg. A. 2, 291; Hor. Epod. 7, 10; Ov. M. 13, 176; Sil. 1, 77 et saep.: miserat civitas Lingonum vetere instituto dona legionibus dextras, hospitii insigne, a pair of hands clasped in each other, made of gold, silver, etc., Tac. H. 1, 54; cf. id. ib. 2, 8 (so in Gr. δεξιὰν πέμπειν and φέρειν).— Prov.: dextra tenet calamum; strictum tenet altera ferrum,Ov. H. 11, 3.
* Transf.
* Trop., pledge of friendship: renovare dextras,Tac. A. 2, 58; cf.: Graecia tendit dexteram Italiae suumque ei praesidium pollicetur,Cic. Phil. 10, 4, 9: nec veriti dominorum fallere dextras,Verg. A. 6, 613; cf. id. ib. 3, 610; Nep. Dat. 10, 1; Just. 11, 15, 13: ne fas, fidem, dextras, deos testes fallat,Liv. 29, 24.
* Poet., the hand, in gen.: omne sacrum rapiente dextra,Hor. Od. 3, 3, 52; id. S. 2, 1, 54.
Charlton T. Lewis, Charles Short, A Latin Dictionary