From The Collaborative International Dictionary of English v.0.48 :
bobfloat \bob"float\ n.
1. a small float usually made of cork; attached to a fishing
line.
Syn: bob, bobber, cork.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) :
bobfloat
n 1: a small float usually made of cork; attached to a fishing
line [syn: bob, bobber, cork, bobfloat]