Any turbulent or frothy water as found in river rapids or surf. / (figuratively) Turbulent conditions.

(chemistry) The water present in the crystals of the salts of certain metals; it is weakly bound by electrostatic forces and may normally be removed by heating.

A cattle disease, with one symptom being reddish urine. / A wastewater in the manufacture of TNT.

Alternative spelling of watermelon

Any long-legged aquatic insect of the family Nepidae, commonly the species Nepa cinerea.

diving bell spider / (operations, logistics) A warehouse worker who performs only certain specific tasks, often replenishment.

(shipbuilding) the outline of a horizontal section of a vessel, as when floating in the water.

a small wetland bird (Rallus aquaticus) of the family Rallidae that breeds in marshes and reedbeds across Europe and Asia.

A form of childbirth in which the mother is supported in a birthing pool so that the child is delivered into the warm water.

A device which reduces the calcium and magnesium concentration of hard water by passing it through an ion exchange resin.