ten

ten /ˈtɛn/ noun
plural tens
ten
/ˈtɛn/
noun
plural tens
Britannica Dictionary definition of TEN
1 
[count] : the number 10
2 
[count] : the tenth in a set or series
3 
[noncount] : ten o'clock
4 
[count]
a  US : a ten-dollar bill
b  British : a ten-pound note
5 
[singular]
a  : something that is the best

ten a penny

British, informal
: very common

ten out of ten

— used to say that something was done very well

ten to one

informal
: very likely