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1.
Abdominal and pectoral muscles that have been toned to such a degree that they resemble the body of a trilobite.

This could be considered one of the highest compliments paid to a guy regarding his appearance.
"How many hours a day does that dude work out to get such trilobite abs?"

"That dude has some serious trils."
by AndreaxaerdnA June 22, 2012
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