1. (of a drink) served neat with ice

1. In difficulties and likely to fail
   - on the ropes

Encyclopedia: On the rocks

• sour milk
• sour orange
• sour salt
• sour-gum family
• sour-tasting
• sourball
• source
• source book
• source code
• source language
• source materials
• source of illumination
• source program
• sourdine
• sourdough
• sourdough bread
• soured
• soured cream
• souring
• sourish
• sourly
• sourness
• sourpuss
• soursop
• soursop tree