blarney n. Smooth, wheedling talk; flattery. (Colloq.) Blarney stone, a stone in Blarney castle, Ireland (built in 1446), said to make those who kiss it proficient in the use of blarney. Note: The origin of the stone is uncertain. In order to kiss the Blarney stone, which is located in the side of the castle, one must be held upside-down by the feet and lowered into the proper position from an opening in an overhang in the parapet. It is an experience eschewed by some tourists.