ten 
/ˈtɛn/ noun
plural tens /ˈtɛn/ noun 1 [count] : the number 10 2 [count] : the tenth in a set or series
▪ the ten of spades ▪ page ten 3 [noncount] : ten o'clock
▪ “What time is it” “It's ten.” 4 [count] a US : a ten-dollar bill
▪ The total cost was $7.83 and she gave him a ten. ▪ Do you have any fives or tens?
b Brit : a ten-pound note 5 [singular] a : something that is the best
▪ The food at the restaurant is a (perfect) ten.
b : a very attractive person
▪ She's a ten.
▪ the ten of spades ▪ page ten
▪ “What time is it” “It's ten.”
▪ The total cost was $7.83 and she gave him a ten. ▪ Do you have any fives or tens?
b Brit : a ten-pound note
▪ The food at the restaurant is a (perfect) ten.
b : a very attractive person
▪ She's a ten.
ten a penny
Brit, informal : very common
▪ Thrillers are ten a penny [=(US) a dime a dozen] these days.
▪ Thrillers are ten a penny [=(US) a dime a dozen] these days.
ten out of ten
— used to say that something was done very well ▪ I'll give them ten out of ten for creativity.
ten to one
informal : very likely
▪ Ten to one they'll lose. [=I think they'll almost certainly lose]
▪ Ten to one they'll lose. [=I think they'll almost certainly lose]
— ten adjective
▪ ten cars/guests/choices
▪ ten cars/guests/choices
— ten pronoun
▪ Ten (of them) passed the test.
▪ Ten (of them) passed the test.
