expression
Colloquial form of もう一つ, used in casual speech to request or mention an additional item.
See also: もう一つ
も一つください。
Give me one more, please.
も一つ質問があるんだけど。
I have one more question.
expression, adverb
Used with a negative verb to mean 'not quite' or 'not very', implying something is lacking or insufficient. Often appears as も一つ~ない.
See also: もう一つ
この映画はも一つ面白くなかった。
This movie wasn't very interesting.
彼の説明はも一つよくわからなかった。
I didn't quite understand his explanation.