waterstop

Noun

waterstop (plural waterstops)

1. A waterproof barrier that is used to prevent moisture from leaking through a joint.
   • A waterstop, which is installed before pouring the concrete, may be effective in sealing joints, but is not applicable for cracks.2010, Center for Chemical Process Safety, Guidelines for Safe Warehousing of Chemicals, page 83
2. A location along a waterway where a water taxi, riverboat, or similar form of transportation makes a regular stop to load and unload passengers or cargo.
   • The barge pulled up at the waterstop; she allowed the young men to leave first and then followed them up the incline to Greenwich Palace.2009, Virginia Henley, The Raven and the Rose, page 292