sinker

(redirected from sinker balls)
Also found in: Dictionary, Thesaurus, Financial.

sinker

1. a weight attached to a fishing line, net, etc., to cause it to sink in water
2. a person who sinks shafts, etc.

sinker

[′siŋ·kər]
(mining engineering)
A person who sinks mine shafts and puts in framing.
A special movable pump used in shaft sinking.