also: たまウキ
noun
bubble float; bobber
A small float used in fishing, often a bubble float that can be partially filled with water to adjust buoyancy.
玉浮きに水を入れて重さを調節する。
I put water into the bubble float to adjust its weight.
ウキ釣りでは玉浮きがよく使われる。
Bubble floats are often used in float fishing.
Generic term for any fishing float; 玉浮き specifically refers to a bubble-shaped float.
Compound of 玉 (たま, 'ball') and 浮き (うき, 'float'), referring to its round shape.