土ど台だい石いしMeaningsNoun1. cornerstone; foundation stoneKanji used土earth台pedestal石stoneComposed of土ど台だいfoundation; base; basis; from the beginning; from the outset; by natureNoun石いしstone; rock; pebble; jewel; precious stone; flint (in a lighter); (round) game piece; stone (in go, etc.); disc (in Othello); stone (in the bladder, kidney etc.); …Noun