Definitions

1. noun

a device, typically made of metal, that is attached to a fishing line to sink it to the bottom of a body of water

“The angler used a heavy sinker to get the bait to the bottom of the lake quickly.”

2. verb

to cause something to sink or become submerged

“The storm sank the ship, and it quickly filled with water.”

3. verb

to cause something to become less effective or successful

“The team’s performance sank after their star player got injured.”