Entry 4 senses · 2 variants Webster, 1913 Thurl · IPA /θɝl/ n. v. t. 01 n. A hole; an aperture. 1. A hole; an aperture.[Obs.] 2. A short communication between adits in a mine.(Mining) 02 v. t. To cut through; to pierce. 1. To cut through; to pierce.[Obs.] 2. To cut through, as a partition between one working and another.(Mining)