From cebel; porterage -- burden.
see HEBREW cebel
H5450. siblah
[סִבְלָה] noun feminine burden; — plural construct מִצְרַיִם סִבְלֹת Exodus 6:6 (P), of the heavy labours imposed on Israel by Egyptian, 6:7; suffix סִבְלֹתֵיכֶם 5:4 (J), סִבְלֹתָם 1:11; 5:5 (both J), 2:11 (E); (compare Psalm 81:7, סֵבֶל).