sinker

nouns

a small ring-shaped friedcake
donut, doughnut, sinker
a weight that sinks (as to hold nets or fishing lines under water)
sinker
is derived from
sink
is a type of (narrower)
an artifact that is heavy
weight
a pitch that curves downward rapidly as it approaches the plate
sinker
is a type of (narrower)
(baseball) the act of throwing a baseball by a pitcher to a batter
delivery, pitch