1. a woodworking tool with a flat bottom and sharp blade used to smooth or shape wood surfaces
2. a power tool or machine that smooths wood by removing thin shavings

Examples

• The carpenter used a planer to smooth the rough board.
• He ran the wood through the electric planer twice.
• The old hand planer produced perfect wood shavings.
• She adjusted the blade depth on her planer.
• The planer left the surface completely flat.
• Wood shavings covered the floor around the planer.
• He bought a new planer for his workshop.