Is it ensure, insure, or assure?
c.1200, from Old French baraigne, baraing "sterile, barren" (12c.), perhaps originally brahain, of obscure derivation, perhaps from a Germanic language. In England, originally used of women, of land in France. Of land in English from late 14c. As a noun, mid-13c., "a barren woman;" later of land.
BARRENS. Elevated lands, or plains upon which grow small trees, but never timber. [Bartlett, "Dictionary of Americanisms," 1848]
barren bar·ren (bār'ən)
Not producing offspring.
Incapable of producing offspring.
For a woman to be barren was accounted a severe punishment among the Jews (Gen. 16:2; 30:1-23; 1 Sam. 1:6, 27; Isa. 47:9; 49:21; Luke 1:25). Instances of barrenness are noticed (Gen. 11:30; 25:21; 29:31; Judg. 13:2, 3; Luke 1:7, 36).