Dildo is the winner, here is a Wikipedia reference
that includes word origins such as "Dil Doul".
And as for the unicorn horn being an abomination, yes it is... but that is part of the pleasure!
A little know secret about the Unicorn Horn Dildo
available on the Eden site, is that we have a medium sized unicorn stable behind the warehouse. So every time that we get an order for one of these dildos, someone has to go out back, kill the unicorn, and harvest the magic.