1 definition by Webster New Am Dictionary

1. To be extremely slow (i.e. the opposite of fast). 2. To have the effect of slowing down others (i.e. kind of like the opposite of synergy). 3. A boat anchor, an immovable lump of useless mass.
Man we were really groce in that relay we ran last month. Yeah, it was like we were dragging a groce around!
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