An adverb meaning just a little, only a tiny amount — used to indicate a very small quantity, time, or degree. Common in speech.
ほんのちょっと待ってください、すぐ戻ります。
Please wait just a moment; I'll be right back.
料理にほんのちょっと塩を足してみて。
Try adding just a little salt to the dish.
給料がほんのちょっと上がっただけで助かった。
Even a small raise in salary helped.
彼の助言のおかげで、ほんのちょっと楽になった。
Thanks to his advice, I felt just a little better.