Rahab = "breadth"

mythical sea monster, lit. "storm", "arrogance", but only as names

Root √רהב: רָהַב vb act stormily boisterously arrogantly Qal storm against Hiph alarm me . of eyes, dub.: .

רַ֫הַב n.[m.] storm arrogance mythical sea monster emblemat. name of Egypt lit. but only as names, v. infr.;