Poured over ice, usually in reference to alcoholic drinks.
I'll have a whisky on the rocks.
Coordinate terms: neat, straight up
In a bad state, particularly of a romantic relationship.
Joe and Tammy's relationship is on the rocks again.
According to the City of Rocks National Reserve Superintendent Wallace Keck, the area known as Camp Rock was defaced with graffiti sometime during the weekend on several historic markings on the rocks. Source: Internet
Coastguard officials said that the ship was firmly on the rocks but was not leaking and no lives were in immediate danger. Source: Internet
Two little blue penguins (Eudyptula minor), the world’s smallest penguin species, on the rocks of St Kilda breakwater. Source: Internet
The Forfarshire had foundered on the rocks and broken in half: one of the halves had sunk during the night. Source: Internet
A relationship doesn’t have to be on the rocks to put some work into it. Source: Internet
Combine all ingredients into a cocktail shaker with ice, shake and serve on the rocks. Source: Internet