breakwaters

/B R EY1 K W AO0 T ER0 Z/
noun
  1. 1

    A construction in or around a harbour designed to break the force of the sea and to provide shelter for vessels lying inside

  2. 2

    A low bulkhead across the forecastle deck of a ship which diverts water breaking over the bows into the scuppers

  3. 3

    On beaches: a wooden or concrete barrier, usually perpendicular to the shore, intended to prevent the movement of sand along a coast.

Source: https://en.wiktionary.org/wiki/breakwater, https://en.wiktionary.org/wiki/breakwaters