Definitions by Whistlinphil

Duffer

A name for Velcro running shoes that look like the type an old person would wear.

Those shoes you got from the thrift store are real duffers!

Duffer by Whistlinphil September 15, 2016

making any non-verbal noise through the mouth by means of passing air in or out over teeth and tongue

That guy is trying to get peoples' attentions by whistling while he works.