(~s)
1.
A ~ on something is the same thing presented in a slightly different form.
This delicious ~ on an omelette is quick and easy to prepare...
N-COUNT: usu N on n
2.
A ~ is a change or slight difference in a level, amount, or quantity.
The survey found a wide ~ in the prices charged for canteen food...
Every day without ~ my grandfather ate a plate of cold ham.
N-VAR