רַהַבrahab

literally storm, arrogance, but only as names, see below

Pronunciation: rah'-hab · Hebrew/Aramaic (Old Testament) · H7293

Meanings

1. mythical sea monster (Job 9:13; Job 26:12; Psalms 89:11)

2. emblematic name of Egypt (Psalms 87:4; Isaiah 30:7)

Same root

רָהַבrâhab · H7292to urge severely, i.e. (figuratively) importune, embolden, capture, act insolently
רַהַבRahab · H7294Rahab (i.e. boaster), an epithet of Egypt

Where it appears

Appears 2 times in the Bible.

Psalms 87:4 I will count Egypt and Babylon among those who know me— also Philistia and Tyre, and even distant Ethiopia. They have all become citizens of Jerusalem!
Isaiah 30:7 Egypt’s promises are worthless! Therefore, I call her Rahab— the Harmless Dragon.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).