An onomatopoeic adverb for a short, sharp prick or sting—often used for injections or small, momentary pains.
注射のとき、ちくっとしただけで我慢できた。
When getting the injection, it was just a quick prick and I could bear it.
庭の枝で指がちくっと痛んだ。
My finger pricked sharply on a branch in the garden.
寒さで肌がちくっとする感じがした。
I felt a small, sharp sting on my skin from the cold.