Answer: sand

AnswerCrossword Clue
SANDDune makeup
SANDBunker stuff
SANDBank deposit?
SANDCastle-building material
SANDNeutral hue
SANDTake the edge off?
SANDHourglass fill
SAND"The Devil's Pool" novelist
SANDBeach blanket?
SANDShore thing
SANDBox filler
SANDSmooth wood
SANDCastle material, perhaps
SANDBeach, mostly
SANDBeach surface
SANDBeachfront property?
SANDBetween-your-toes grains
SANDHourglass flow
SANDSmooth in the shop
SANDGolf hazard, often
sandto smooth or polish with sandpaper
SAND1966 Steve McQueen film, "The ... Castles"
SANDMake smooth
SANDSmooth down
SAND... box: playground feature
SANDBunker filler
SANDChopin's companion
SANDStarter for bar or bag
SANDWord before hill or dollar
SANDBeach covering
SANDHourglass contents
SANDCastle material?
SANDConstruction material for some castles
SAND1989 R.E.M. single
SANDGrit in a golf trap
SANDHourglass material
SANDWork on wood
SANDChopin companion
SANDHourglass filler
SANDAnalog for time