1. Japanese for "man of a hundred conquests". It's a slang term meaning that a guy is a ladies man, or a player.

2. A sex-warrior, great in bed.

Pronounced HEE-AHK-OO NEEN GEER.
Girl: "Joey is so hot... I wish I were his type."
Girl 2: "Are you kidding me?? Of course you're his type, he's a hyaku nin gir. He loves the ladies."
by L_Roku September 3, 2007
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