石屎

shíshǐ
(dialect) concrete

CEDICT

dialect

Entry Composition

1 石 shí
  1. rock
  2. stone
  3. stone inscription
  4. one of the eight categories of ancient musical instruments 八音 bāyīn
2 屎 shǐ
  1. feces; excrement; a stool
  2. (bound form) secretion (of the ear, eye etc)