Bits of toast crumb embedded in butter or margarine after it is returned to the refrigerator, left behind by careless use of a warm knife that has already made a pass along the surface of a piece of toast. (Entered US English as a Sniglet, c. 1984.)
George, an afficionado of fine butters, found the abundance of toasticles in the tub rather revolting.
by Toastey September 22, 2006