Tinghamut was the name that Worf gave to a polaron emitter that was knocked out of Odo's hand during their infiltration of a feast for those Klingons about to be inducted into the Order of the Bat'leth in 2373.

Worf and Odo claimed that it was a Vulcan children's toy taken from the Archanis sector, invaded by the Klingon Empire a few weeks before. (DS9: "Apocalypse Rising")

According to the script, this thing's name was pronounced as "TING-ha-mut". [1]