/ˈləmbər/ /-ˌbär/
Adjective
Related to the lower back or loin (wiktionary.org); of or relating to or near the part of the back between the ribs and the hipbones (wordnetweb.princeton.edu); pertaining to the loins, the part of the back between the thorax and the pelvis. (biology-online.org)
Word origin: From Modern Latin lumbaris, from Latin lumbus “loin”