Noah Webster's Dictionary (n.) An agreement; a league; a compact; a covenant.

Multi-Version Concordance Pact (2 Occurrences) Isaiah 28:18 And the help you were looking for from death will come to nothing, and your agreement with the underworld will be broken; when the overflowing waters come through, then you will be overcome by them. (See NAS) Isaiah 57:8 And on the back of the doors and on the pillars you have put your sign: for you have been false to me with another; you have made your bed wide, and made an agreement with them; you had a desire for their bed where you saw it (See NIV)