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1.
In English and commonwealth countries this means to be "somewhat hungry"
"I am a hua of a peckish" means that you are very hungry
by Chris November 19, 2004
 
2.
Word typically used by the morbidly obese who wish to avert the use of synonyms such as "hungry."
"I've only had a pound round-eye steak and a pound of chips, I can't figure out why I'm so peckish"

As Bonnie shoveled handfuls of corn chips into her mouth, she remarked "It's hard to lose weight when you're so peckish all the time."
by instante101 October 15, 2012
 
3.
to feel under the weather or hung over american meaning of peckish
i drank to much last night now i feel peckish
by goatimus May 15, 2011