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(n.) a very noticible bruise or blod clot in one's body.
(pl.)= plactii

ex: Did you see that plactus on that girl's wrist. Damn..someone must've hit that pretty hard.

ex: Why are there so much plactii on your body, Jeanette? Is there something wrong at home?
by longoshorta February 04, 2006
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