conduit

noun
1
a pipe, channel or tube through which liquid, gas or electrical wire can pass
کانال, مجرا, لوله, کانال انتقال
2
a person, an organization or a country that is used to pass things or information to other people or places
واسطه, کانال, رابط, کانال ارتباطی
The organization had acted as a conduit for money from the arms industry.