LSJ
τά, the five stones ; πεντελίθοις παίζειν, a game played by women, in which five pebbles, potsherds, dice, etc., were tossed from the back of the hand and caught in the palm, jackstones, Ar. Fr. 366.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)