Peckish means slightly hungry. Feeling peckish, a bit peckish, getting peckish.
It is British, mild and cheerful — peckish is the hunger that suggests a biscuit rather than a meal, which is exactly why it is useful. It is built on peck, as a bird does, so being peckish is wanting to peck at something. Note that in Australian slang peckish can mean properly hungry.
1adjectivepeckishSlightly hungry.
“I'm feeling a bit peckish; is there anything in the fridge?”
peckish is a mild hunger.
Peck plus -ish, from the late eighteenth century. The image is a bird pecking at food.
Middle English
pecken
English
peck
English, today
peckish
Built from
From peck + ish. From late 18th century. peck comes from Middle English pecken, pekken, variant of Middle English piken, picken, pikken (“to pick, use a pointed implement”). More at pick.
Etymology from Wiktionary, CC BY-SA