water key

noun

1. a lever to drain saliva from a brass musical instrument, as the trombone.

Example Sentences

In his book Bascomb, a Seattle author, revives the World War II story of a group of tough, brave and committed Norwegians who, from a base in England,  managed to knock out the production of heavy water, key ingredient for an atomic bomb, at a remote power plant in Norway.

From Seattle Times

For example, Dr. Fletcher said he wanted to piece together Juno’s measurements of ammonia and water — key constituents of Jupiter’s clouds — with the weather patterns seen in the Very Large Telescope pictures.

From New York Times

Ecological agriculture eschews applying chemical fertilizers to soil; rather, it favors compost and manure, which increase the soil’s fertility and ability to retain water—key advantages against hot, dry weather.

From Slate

The vessels first dispersed into coves and creeks to careen and salt turtle, and then reunited at the Water key.

From Project Gutenberg

As soon as the squadron was ready, they mustered at Water Key, and set sail for Golden Island, where they meant to hold a final council.

From Project Gutenberg