In zoology, inhabiting salt water or the sea: as, a salt-water fish; a salt-water infusorian.
The Century Dictionary (Public Domain)
Use "salt-water" in a sentence
"I came across it as a thing when I lived in the United States and it was known as salt-water toffee."
"The developers of 77 12th St. are planning to rent apartments starting at $1,500 a month for one-bedroom units, with such amenities as granite kitchens and a salt-water pool."
"MCO has a 3,000 gallon salt-water aquarium (in the food court), a fountain with changing water patterns and life-size statues of theme park characters for "last chance" photo ops."