a poetical name of Egypt, (Psalms 89:10; Isaiah 51:9) signifying "fierceness, insolence, pride." Rahab, as a name of Egypt, occurs once only without reference to the exodus: this is in (Psalms 87:4) In (Isaiah 30:7) the name is alluded to.
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Smith, William, Dr. "Entry for 'Ra’hab,'". "Smith's Bible Dictionary".