Strong's H4052מִגְרָעָה: a ledge or offset KJV:narrowed rest.
Meanings: Brown-Driver-Briggs (1906) and Strong's Hebrew Dictionary (1890), public domain, via the Open Scriptures Hebrew Bible Project (CC BY 4.0). TWOT numbers for reference only.
Root family 384: גָּרַעgāraʿ — diminish, restrain, withdraw; be withdrawn; draw up; scrape, shave, remove, lessen, withhold; abate, clip, minish, do away, keep back, make small