Answer: sands

AnswerCrossword Clue
SANDSDeserts
SANDSVegas casino razed in 1997
SANDSTreats an icy road
SANDSDoes a woodworking chore
SANDSContents of hourglasses
SANDSTommy of "Babes in Toyland"
SANDSHourglass contents
SANDSSmooths with an abrasive
SANDSRemoves rough spots
SANDSWhite ..., New Mexico
SANDSThe .. of time
SANDSSmoothes wood
SANDSHourglass fillers
SANDSShorelines, often
SANDS"... of Iwo Jima": 1949 film
SANDSHistoric Vegas hotel, with "the"
SANDSMetaphor for time ... and, when divided into three words, puzzle theme found in the four longest across answers
SANDSSmooths in wood shop
SANDSRemoves the rough spots
SANDSSmooths wood
sandsSAND, to cover with a loose granular rock material
SANDSThe .. of time
SANDSClassic Vegas casino
SANDS"... of Iwo Jima": 1949 John Wayne film
SANDSSmooths, in a way
SANDSWhite ... National Monument
SANDSMakes smoother
SANDSSmooths
SANDSHourglass grains
SANDSVegas hotel imploded in 1996
SANDSFormer Vegas casino
SANDSChilders' fiction, "The Riddle of the ..."
SANDS".. of Iwo Jima"
SANDSBeach tracts
SANDSFinishes furniture
SANDSDesert
SANDSRazed Vegas landmark
SANDSSmooths, as wood
SANDSTime, metaphorically
SANDSHistoric Vegas hotel