perk 2 
(pûrk)
(pûrk)n.
Informal
Informal
A perquisite.
[Shortening and alteration of PERQUISITE.]
- ground sheet
- groundside
- groundsill
- groundskeeper
- groundskeeping
- ground sloth
- ground speed
- groundspeed
- ground squirrel
- ground state
- ground stroke
- ground substance
- groundswell
- ground tissue
- ground truth
- groundtruth
- ground-truth
- groundwater
- ground water
- ground wave
- groundwork
- ground zero
- group
- grouper
- group home