From rachab; roomy, in any (or every) direction, literally or figuratively -- broad, large, at liberty, proud, wide.
see HEBREW rachab
H7342. rachab
I. רָחָב21 adjective wide, broad; — absolute ׳ר Job 30:14; construct רְחַב Proverbs 21:4 +; feminine singular רְחָבָה Exodus 3:8 +; construct רַחֲבַת Genesis 34:21 +; masculine plural construct רַחֲבֵי Isaiah 33:21; — wide, broad, spacious, of land Exodus 3:8 (J), Nehemiah 9:35, יָדַיִם רַחֲבַת, etc., Genesis 34:21 6t., see יָד 3d; ׳ר מִנִּייָֿם Job 11:9 (of greatness of God, "" מֵאֶרֶץ אֲרֻכָּה); בָּֽרְחָבָה as substantive Psalm 119:45 in a wide, roomy, space (figurative); ר ׳מֶּרֶץ Job 30:14 (simile); of cup Ezekiel 23:32 (in figurative; + הָעֲמֻקָּה); of wall (= thick) Jeremiah 51:58; specifically, in Jerusalem (as proper name) הָֽר ׳הַחוֺמָה Nehemiah 3:8; 12:38; figurative extensive, of work, undertaking, מְלָאכָה, 4:19 (+הַרְבֵּה); of ׳יs commandment Psalm 119:96 (i.e. unlimited, measureless); לֵבָב רְחַב 101:5 i.e. exultant, arrogant ("" גְּבַהּעֵֿינַיִם), so ׳ר לֵב Proverbs 21:4 ("" ׳רוּםעֿ); נֶפֶשׁ רְחַב 28:25 i.e. greedy (compare אולת רחב Ecclus 47:23c, in play on רְחַבְעָם).