As nouns the difference between blackie and blankie
is that blackie is an alternative spelling of blacky while blankie is a blanket, especially one used as a security blanket.
blankie
English
Alternative forms
* blanky
Noun
(
en noun)
(informal) A blanket, especially one used as a security blanket.
* 2002 , Belinda Luscombe, " Dress to De-Stress
," Time , 18 Feb.,
- They instead sought out a place of refuge, somewhere familiar with a blankie and a mug of hot cocoa.