bone radical (left side)
Refers to the kanji radical ⾻ (radical 188) when it appears on the left side of a character, as in 骸 or 髄.
"骨偏" refers to the bone radical on the left side of a kanji.
Compound of 骨 (ほね, 'bone') and 偏 (へん, 'left-side radical').