to make foul is a form of:

Refrigeratory



ENGLISH MEANING
noun
1.
That which refrigerates or cools.
2.
In distillation, a vessel filled with cold water, surrounding the worm, the vapor in which is thereby condensed.
3.
The chamber, or tank, in which ice is formed, in an ice machine.
adjective
1.
Mitigating heat; cooling.