An adverb meaning leisurely, slowly, gradually, or steadily — little by little.
仕事はぼちぼち片付けていけばいいよ。
You can take care of the work little by little.
春になって、庭の花がぼちぼち咲き始めた。
With spring, the flowers in the garden have started to bloom gradually.
傷はぼちぼち良くなってきている。
The wound is gradually getting better.
An adverb meaning soon or shortly — used to indicate it's about time to do something.
ぼちぼち行きますか？
Shall we head off soon?
もうぼちぼち帰る時間だ。
It's about time to go home.
An adverb meaning here and there, scattered or dotted in places.
庭に花がぼちぼち咲いている。
Flowers are blooming here and there in the garden.
壁に写真がぼちぼち掛かっている。
There are photos hung here and there on the wall.
Kansai dialect: used adjectivally to mean not bad, passable, or so-so.
テストの点はぼちぼちやったで。
My test score was so-so (Kansai dialect).
ぼちぼちやれば大丈夫や。
If you take it easy and do it steadily, you'll be fine (Kansai dialect).