1.
Your ~ on something or someone is your need for them in order to succeed or be able to survive.
...the city’s traditional ~ on tourism...
= reliance
N-UNCOUNT: usu N on n
2.
If you talk about drug ~ or alcohol ~, you are referring to a situation where someone is addicted to drugs or is an alcoholic.
= addiction
N-UNCOUNT: usu n N
3.
You talk about the ~ of one thing on another when the first thing will be affected or determined by the second.
...the ~ of circulation on production.
N-UNCOUNT: usu with supp