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1.
practice for band members that involves learning how to play and march better. these practices are to prepare band members for performances, concerts, and competitions.
I have band practice after school on Monday's, Tuesday's, and Thursday's from 3:30 - 6:00 PM.
by stillAflute_iWillBe4ever July 01, 2006
 
2.
An expression often used to get out of an awkward situation.

This is particularly popular the morning after a one night stand. Either to make your excuses to leave or to hint that the other party should be on their way.
I've gotta go, I have band practice.

I'd can't go out tonight. I've got band practice.

Last night was great, the boys are coming over soon for band practice.
by poiuytoo July 10, 2011
 
3.
A euphemism for sex
Will: Jeah, wanna go to band practice?

Jeah: Nahh, not with you
by Bee [: October 13, 2009