(surfing) A maneuver in which a surfertransitions above the unbroken face of the wave onto the lip, or on top of the breaking section of the wave.
(vulgar) A piece of faeces that floats.He left a floater in the toilet.
(two-up) A coin which does not spin when thrown in the air.1998: In this section "floater" means a spin in which at least 1 of the coins does not turn over in the air at least once. — Queensland government Casino Gaming Amendment Rule (No. 2) 1998http://www.legislation.qld.gov.au/LEGISLTN/SLS/1998/98SL233.pdf
(slang) Someone who attaches themselves to a group of people, much to the dismay of that group, and repeatedly shows up to participate in group activities despite attempts to get rid of, or “flush,†that person.