Top definition
1) One who is depended upon to complete an integral function of a larger task, but fails in a manner which nullifies the efforts of the others involved

2) One known notoriously for "dropping the ball" (see above) often.
"Ok, joe can get the keg and rich can make up the posters"

"wait, Joe can't get the keg, hes a ball dropper, have bill get it instead"

by Meredith July 15, 2003
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