Answer: mensas

AnswerCrossword Clue
MENSASAltar slabs
MENSASTops of altars
mensasMENSA, the grinding surface of a tooth
mensasa southern constellation (the Table) near Octans
mensasinternational fellowship organization for people with IQ's in the top 2 percent of the general population
mensasthe flat stone forming the top of the altar in a Roman Catholic church