To use pillows from a couch as a blanket when cold and sleeping ,when no real blanket is available or close enough, and getting up from the couch to get a real blanket is completely out of the question
"Mike & Em' were cold but to comfy & sleepy to get a real blanket while napping on the couch..a layer of couch pillows then became their blanket...Planket' was born!
by Mike'Em August 18, 2014
1 more definition
Planket is a blanket you bring on the airplane
Give me my fucking planket, I got an early flight in the morning
by Jess&edgy February 13, 2014