1. A ridge separating water basins.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• wateched,
• watership,
• waterted,
• watershield,
• qatershed,
• aatershed,
• satershed,
• eatershed,
• watrshed,
• watersehd,
• wattershed,
• water shed,
• Watshed,
• waterishh,
• watersoked,
• watter shed,
• waterwased,
• wathershed,
• water shead,
• wattershead

• waiters,
• water gage,
• watergate,
• waterson,
• waterside,
• waters,
• watercolor,
• water gas,
• Watterson,
• water ice,
• water-washed,
• watters,
• water-wash,
• waders,
• waitress,
• water-shield,
• waterhouse,
• watercourse,
• watercress,
• water shrew,
• water-cooled,
• waterspout,
• waterskin,
• water gate,
• water chute.

The adjective form of the word "watershed" is "watershed".

The plural of the "watershed" can be the "watersheds".

The singular of the "watershed" can be the "watershed".