King James Bible Dictionary

The dual form of matzor, meaning a "mound" or "fortress," the name of a people descended from Ham (Genesis 10:6, 13; 1 Chronicles 1:8, 11). It was the name generally given by the Hebrews to the land of Egypt (q.v.), and may denote the two Egypts, the Upper and the Lower. The modern Arabic name for Egypt is Muzr.

tribulations

Son of Ham.
Genesis 10:6; Genesis 10:13; 1 Chronicles 1:8; 1 Chronicles 1:11

(the two Egypts; red soil), the usual name of Egypt in the Old Testament the dual of Mazor, which is less frequently employed. Mizraim first occurs in the account of the Hamites in (Genesis 10:1) ... In the use of the name Mizraim for Egypt there can be no doubt that the dual indicates the two regions, upper and lower Egypt, into which the country has always been divided by nature as well as by its inhabitants.