Entry 1 sense Webster, 1913 Sawdust /sôd'-ŭstˌ/ · Saw·dust · IPA /ˈsɔːˌdʌst/ 01 n. Dust or small fragments of wood (or of stone, etc.) made by the cutting of a saw. 1. Dust or small fragments of wood (or of stone, etc.) made by the cutting of a saw.