Senseless; vain; empty-headed.
But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, RACA, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire. ( Matthew 5:22 )
Bibliography Information"Entry for 'Raca'". A King James Dictionary.