(~s)
1.
Your ~ of a particular kind of food, drink, or air is the amount that you eat, drink, or breathe in.
Your ~ of alcohol should not exceed two units per day...
N-SING: with supp, oft N of n
2.
The people who are accepted into an organization or place at a particular time are referred to as a particular ~.
...one of this year’s ~ of students...
N-COUNT: usu sing, with supp, oft N of n