sink2

 
Pronunciation: /sɪŋk/

noun

  • 1a fixed basin with a water supply and outflow pipe: I stood at the kitchen sink [as modifier]: a sink unit with cupboard and drawers under
  • 2a pool or marsh in which a river’s water disappears by evaporation or percolation.
  • technical a body or process which acts to absorb or remove energy or a particular component from a system: a heat sink the oceans can act as a sink for CO2The opposite of source.
  • 4 [usually as modifier] British a school or estate situated in a socially deprived area: the local sink school a sink estate

Origin:

Middle English: from sink1