DCHP-1 Online
mug-up ((v.)) † [< n.] Esp. North 
have a mug-up.
See also: mug-up ((n.))
- 1936 They fell into the habit of stopping more often to "mug-up" along the trail.
- 1950 René was just "mugging up" when the shaggy terrier leaped from the bush, landed on his shoulders and sent the blackened tea pail flying.
- 1936 They fell into the habit of stopping more often to "mug-up" along the trail.