Historical clue formulations

• Cavity filler — 2018-05-20
• Joint ailment — 2016-10-27
• Mosaicist's supply — 2013-02-10
• Filler of some cavities — 2012-10-26
• Tile-setter's bucketful — 2011-11-15
• Mosaic artist's material — 2010-12-15