PACT, civil law. An agreement made by two or more persons on the same subject in order to form some engagement, or to dissolve or modify, one already made, conventio est duorum in idem placitum consensus de re solvenda, id. est facienda vel praestanda. Dig. 2, 14; Clef des Lois Rom. h.t.; Ayl. Pand. 558; Merl, Rep. Pacte, h.t.

Source: Bouvier's Law Dictionary, Revised 6th Ed (1856)
 

pact \pact\ (p[a^]kt), n. [L. pactum, fr. paciscere to make a bargain or contract, fr. pacere to settle, or agree upon; cf. pangere to fasten, Gr. phgny`nai, Skr. p[=a][,c]a bond, and E. fang: cf. F. pacte. Cf. Peace, Fadge, v.]

An agreement; a league; a compact; a covenant. --Bacon. [1913 Webster]

The engagement and pact of society which goes by the name of the constitution. --Burke. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

37 Moby Thesaurus words for "pact": accord, agreement, alliance, arrangement, bargain, binding agreement, bond, cartel, collective agreement, compact, concord, concordat, consortium, contract, convention, covenant, covenant of salt, deal, dicker, employment contract, entente, formal agreement, ironclad agreement, legal agreement, legal contract, mutual agreement, paction, promise, protocol, settlement, stipulation, transaction, treaty, understanding, union contract, valid contract, wage contract

Source: Moby Thesaurus II by Grady Ward, 1.0
 

pact

Source: WordNet (r) 2.0
 

Pact \Pact\, n. [L. pactum, fr. paciscere to make a bargain or contract, fr. pacere to settle, or agree upon; cf. pangere to fasten, Gr. ?, Skr. p[=a]ca bond, and E. fang: cf. F. pacie. Cf. Peace, Fadge, v.]

An agreement; a league; a compact; a covenant. --Bacon.

The engagement and pact of society whish goes by the name of the constitution. --Burke.

Source: Webster's Revised Unabridged Dictionary (1913)