Lexical Definition

‎מֶרְחָב‎ merchâb (mer-khawb') broad H:N-M
from ‎רָחַב‎

breadth, large place (room).

1) broad or roomy place, wide, expanses

Usage: 5 forms in 6 verses
Form Translated As     In Verse(s)
לַמֶּרְחָ֖ב to roomy place 2Sam.22.20
לַמֶּרְחָ֑ב to roomy place Ps.18.19
לְמֶרְחֲבֵי to expanses of Hab.1.6
בַמֶּרְחָ֣ב in roomy place Ps.31.8 • Ps.118.5
בַּמֶּרְחָֽב in roomy place Hos.4.16

Brown-Driver-Briggs

‎מֶרְחָב‎ noun [masculine] broad, roomy, place; — absolute ‎׳‎‎מ‎, of pasture Hos 4:16 (in simile); figurative of freedom from distress and anxiety 2Sam 22:20 = Ps 18:20*; Ps 31:9*; Ps 118:5 (ᵑ0 construct in ‎מֶרְחַבְיָה‎ spacious place of Yah, i.e. extraordinarily spacious, < ‎מֶרְחָב יָהּ‎, ‎יָהּ‎ being subject of verb); plural construct ‎מֶרְחֲבֵיאֶֿרֶץ‎ Hab 1:6 expanses of the earth.

Brown-Driver-Briggs References

Book Refs
2 Samuel 22:20
Psalms 18:20* · 31:9* · 118:5
Hosea 4:16
Habakkuk 1:6