three 
/ˈθri:/ noun
plural threes /ˈθri:/ noun 1 [count] : the number 3 2 [count] : the third in a set or series
▪ the three of hearts 3 [noncount] : three o'clock
▪ “What time is it?” “It's three.” ▪ I leave each day at three.
▪ the three of hearts
▪ “What time is it?” “It's three.” ▪ I leave each day at three.
in threes
: in groups of three
▪ You'll be working in threes.
▪ You'll be working in threes.
three sheets to the wind — see 2sheet
two's company, three's a crowd — see company
— three adjective
▪ three feet/dollars/weeks
▪ three feet/dollars/weeks
— three pronoun
▪ I'll take three, please. ▪ Seven students passed the test and three failed.
▪ I'll take three, please. ▪ Seven students passed the test and three failed.
