From galam; a wrapped (and unformed mass, i.e. As the embryo) -- substance yet being unperfect.
see HEBREW galam
H1564. golem
[גֹּ֫לֶם] noun [masculine] embryo (Late Hebrew גּוֺלֶם, Aramaic גּוֺלְמָא, unfinished vessel), עֵינֶיךָ רָאוּ גָּלְמִי Psalm 139:16 mine imperfect substance (RV) did thine eyes see.