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1.
Something that makes swimmers happy :D

Well, all athletes really...

It's working out really hard for a few days and then doing barely anything in a short amount of time. (usually right before a big game or meet)
When we were tapering, we only did 2500 instead of 7000 =)
by a noun a mouse May 14, 2007
 
2.
when athletes stop working out before an athletic event and just start "knocking boots"
damn, Phelps started tapering early for the Olympics
by GeddyLee August 16, 2004