ice cube 
noun
A small block of ice made in a freezer, especially for adding to drinks: [as modifier]: an ice-cube tray...
- Just pour good oil into a plastic ice-cube tray and freeze until solid.
- Or, boil the leftover wine until it becomes a syrupy concentrate, and freeze it in an ice-cube tray.
- Just freeze it in an ice-cube tray and use the cubes as and when required.
- mountain quail
- mountain railroad
- mountain railway
- mountain ram
- mountain range
- mountain rat
- mountain reedbuck
- mountain rescue
- mountain rice
- mountain ringlet
- mountain rose
- mountain rosebay
- mountain sandwort
- mountainscape
- mountain sheep
- mountains high
- mountain shrimp
- mountain sick
- mountain sickness
- mountainside
- mountain slide
- mountain snow
- mountain soap
- Mountains of the Moon
- mountain sorrel