Top Definition
Creature of epic purportions. Generally the average food service director at a high school. Large, in charge, and often hairy, she is rumored to actually be a giant cockroach. Common in cafeterias and boiler rooms. Is claimed to lay eggs in lockers and make cafeteria food out of children. See behemoth
1. Look at the size of that lunchback! So that's what devoured Carlos...

2. John took his spoiled milk to the lunchback to get a refund, and she poured it in her file cabinet!

3. The lunchback has laid eggs in my locker!
by Spunktastic May 19, 2007

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