Stiff brim (4)
I believe the answer is:
peak
(Other definitions for peak that I've seen before include "'Heyday'" , "maximum pitch" , "Mountain top" , "Acme" , "Summit, often pointed" .)
I believe the answer is:
peak
(Other definitions for peak that I've seen before include "'Heyday'" , "maximum pitch" , "Mountain top" , "Acme" , "Summit, often pointed" .)