twelve
n. A1 Beginner Oxford US //ˈtwɛɫv// UK //twˈɛlv// twelve General-service Informal Slang
n. the number 12. It comes after eleven and before thirteen.
n. the cardinal number equivalent to the sum of eleven and one.
There are twelve months in a year.
The baker packed exactly twelve rolls into the paper bag to complete the order.
The jury consisted of twelve citizens who were tasked with reviewing the evidence presented during the three-week trial.
Usage
When used as a noun, it refers to the digit or a group of that size; as a determiner, it modifies a plural noun.