The Hebrew word of the week is midbar ("wilderness"), taken from the weekly Torah portion BaMidbar. This word appears (with a prepositional prefix) in the first verse of the portion, which is also the Hebrew name for the book of Numbers in the Torah:
The LORD spoke to Moses in the wilderness of Sinai, in the tent of meeting... (Num 1:1a)
Midbar is a noun(Strong# 4057; TWOT #399) that means "wilderness or uninhabited land." Midbar may be derived from the verb dibeir, though according to linguists the exact etymology is uncertain:
The voice of him that crieth in the wilderness, Prepare ye the way of the LORD, make straight in the desert a highway for our God. (Isa 40:3).
Yet You in your great mercies did not forsake them in the wilderness. (Neh 9:19)