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2.
The slick and generally pulsating musclular appendages of hentai monsters, normally tentacular in nature.
"Hiroko watched, mortified, as hentacles blocked her means of escape and then methodically began wrapping her limbs in their slimy touch and forcing them apart..."
by Keshu August 30, 2005
 
1.
A tentacle that engages in sexually perverted (hentai) acts.
The hentacle violated her.
by Hellbunny March 20, 2003
 
3.
A very adult- sick and twisted board game for ADULTS ONLY.
People who are perverted and twisted may still not be able to stomach Hentacle, but will appreciate it for its fuckeduppedness.
by MimmieMimmie June 17, 2009