Blind piles

hemorrhoids which do not bleed.

See also: Piles

References in classic literature ?
He talked to himself, indifferent to the sympathy or hostility of his hearers, indifferent indeed to their presence, from the habit he had acquired of thinking aloud hopefully in the solitude of the four whitewashed walls of his cell, in the sepulchral silence of the great blind pile of bricks near a river, sinister and ugly like a colossal mortuary for the socially drowned.