“CLASTS” is a valid word. — 8 points Scrabble

classa collection of things sharing a common attribute
laststhe temporal end; the concluding time
saltsa compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)
caststhe actors in a play
slatsa thin strip (wood or metal)
scatssinging jazz; the singer substitutes nonsense syllables for the words of the song and tries to sound like a musical instrument
clast(geology) a constituent fragment of a clastic rock
talcsa fine grained mineral having a soft soapy feel and consisting of hydrated magnesium silicate; used in a variety of products including talcum powder

lastthe temporal end; the concluding time
castthe actors in a play
salta compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)
catsfeline mammal usually having thick soft fur and no ability to roar: domestic cats; wildcats
actsa New Testament book describing the development of the early church from Christ's Ascension to Paul's sojourn at Rome
lassa girl or young woman who is unmarried
scatsinging jazz; the singer substitutes nonsense syllables for the words of the song and tries to sound like a musical instrument
lacsresinlike substance secreted by certain lac insects; used in e.g. varnishes and sealing wax
sacsan enclosed space
latsthe basic unit of money in Latvia
talca fine grained mineral having a soft soapy feel and consisting of hydrated magnesium silicate; used in a variety of products including talcum powder
tass
slata thin strip (wood or metal)
altsangular distance above the horizon (especially of a celestial object)
sals

assthe fleshy part of the human body that you sit on
acta legal document codifying the result of deliberations of a committee or society or legislative body
catfeline mammal usually having thick soft fur and no ability to roar: domestic cats; wildcats
satthe seventh and last day of the week; observed as the Sabbath by Jews and some Christians
las
sal
sacan enclosed space
lacresinlike substance secreted by certain lac insects; used in e.g. varnishes and sealing wax
alsthickening of tissue in the motor tracts of the lateral columns and anterior horns of the spinal cord; results in progressive muscle atrophy that starts in the limbs
lata broad flat muscle on either side of the back
altangular distance above the horizon (especially of a celestial object)
tas

ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
asa very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar
laa white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
ala silvery ductile metallic element found primarily in bauxite
taa hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite

CLASTS