Reserve 27, for example, for dropping in the drink?

Wiktionary Word definitions in Wiktionary
alt. 1 (&lit ice cube English) 2 Any small piece of ice used for cooling drinks, larger than crushed ice, regardless of their shape. n. 1 (&lit ice cube English) 2 Any small piece of ice used for cooling drinks, larger than crushed ice, regardless of their ...

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Cooking such small amounts of food can be fiddly and time consuming so try freezing baby-sized portions in ice cube trays. ▪ I improvised by putting colour into an ice cube tray - thus giving me deep wells and plenty of colour. ...

Wikipedia Word definitions in Wikipedia
An ice cube is a small, roughly cube -shaped piece of ice (frozen water), conventionally used to cool beverages . Ice cubes are sometimes preferred over crushed ice because they melt more slowly; they are standard in mixed drinks that call for ice, in which ...

WordNet Word definitions in WordNet
n. a small cube of artificial ice; used for cooling drinks