From atsab; worrisomeness, i.e. Labor or pain -- sorrow, toil.
see HEBREW atsab
H6093. itstsabon
עִצָּבוֺן noun [masculine] pain, toil; — ׳ע absolute Genesis 3:17 toil; construct יָדֵינוּ עִצְּבוֺן 5:29 (both of agriculture); suffix עִצְּבוֺנֵךְ 3:16 (of travail; all J).