Entry 2 senses · 2 variants Webster, 1913 Overtoil · O·ver·toil · IPA v. t. v. t. 01 v. t. To overwork. 1. To overwork. 02 v. t. To weary excessively; to exhaust. 1. To weary excessively; to exhaust. “Then dozed a while herself, but overtoiled By that day's grief and travel.” — Tennyson.