Expresses a minimal desire or hope; often used when the speaker wishes for something small when more is not possible. Can be translated as 'at least' or 'just' depending on context.
I want to go to Japan at least once.
Please at least tell me your name.
I don't have much money, but I want to bring at least ten thousand yen.
You should at least make a thank-you phone call.
I wish you had at least sent me a word to let me know.
If it's at least by the end of today, we might make it in time.