Gradually; little by little; increasingly — an adverb meaning to change or progress step by step.
段々寒くなってきたから、コートを出そう。
It's getting colder little by little, so let's get the coat out.
毎日練習すれば、段々上手になりますよ。
If you practice every day, you'll gradually get better.
段々と観客が増えてきた。
The audience gradually increased.
Steps; stairs; terraces — as a noun referring to stepped structures (e.g., stair steps, terraces).
山の斜面は段々畑になっている。
The mountain slope is made up of terraced fields.
古い家の段々は低くて幅が広い。
The steps in the old house are low and wide.