Definitions of sinker

1. a pitch that curves downward rapidly as it approaches the plate

2. One who, or that which, sinks.

3. A weight on something, as on a fish line, to sink it.

4. In knitting machines, one of the thin plates, blades, or other devices, that depress the loops upon or between the needles.

5. That which sinks or causes to sink; a weight attached to a fishing line.

6. A weight on some body to sink it.

7. He who or that which sinks.