1.SymbolUsed to indicate a size that is smaller or larger than 00"The precision screwdriver set includes size 0, 00, and 000 Phillips head.; 0000 is meant for newborns but if your baby is not too small at birth, you can start with size 000 singlets.; 000 capsules are too large to swallow, but are used for medication to be mixed with a liquid."
2.Proper nounThe telephone number for emergency services in Australia. .mw-parser-output .defdate{font-size:smaller}"When you call 000, the Telstra operator usually answers the phone with "Emergency. Police, fire, or ambulance?""