1. To have enough alcoholic beverages as to be intoxicated; to be drunk. Also written as "have a snootful." Primarily heard in US. The wine was free and the waiter kept filling my glass, so by the end of the evening, I'd had a snoot full! We all had a snoot full at the reception after the ceremony.

2. To have more than enough of something; to be fed up with something. Primarily heard in US. To be honest, I've had a snoot full of everyone telling me how to live my life.