Main Entry: lum·bar

Pronunciation: \ˈləm-bər, -ˌbär\

Function: adjective

1 : of, relating to, or constituting the loins or the vertebrae between the thoracic vertebrae and sacrum <the lumbar region>
2 : of, relating to, or being the abdominal region lying on either side of the umbilical region and above the corresponding iliac region