The beautiful implication of the name first frost means pioneering, foresight and abundant crops. The name means wealth, independence, self-confidence, gentleness, well-being and charm. It's a very good name.
It is forbidden to use uncommon words in naming. Names are used for communication, otherwise, names lose their value of existence. If you use some uncommon words when naming, most people don't know them, which will inevitably affect the communication between people.