whirlpool whirlpool /ˈhwɝːlˌpuːl/

noun

1. A powerful circular current of water (usually the result of conflicting tides)  ( maelstrom , vortex , whirlpool )
   a powerful circular current of water (usually the result of conflicting tides)
   

verb

1. Flow in a circular current, of liquids  ( whirlpool , eddy , whirl , purl , swirl )
   flow in a circular current, of liquids