easy task; piece of cake; cinch
Idiomatic expression meaning something is very easy to do; often used in the phrase お茶の子さいさい (piece of cake).
cake served with tea; light snack
Literal meaning: a small cake or snack eaten with tea. This sense is less common than the idiomatic use.
This kind of work is a piece of cake.
For him, it's like a cinch.
My grandmother always prepared a light snack to go with tea.
piece of cake; cinch; easy task
Literally 'tea child', referring to a small snack served with tea. The idiomatic meaning 'easy task' likely comes from the idea that eating a light snack is effortless.