This is the 409th most frequent Russian word.
ещё
Still; yet; more; else.
Here, 'ещё' means 'more' or 'additional,' indicating a wish or request for an additional amount of something.
Я хочу ещё чая.
I want more tea.
In this sentence, 'ещё' is used to indicate the necessity of an additional quantity of something, in this case, time.
Я не закончил, мне нужно ещё немного времени.
I haven't finished; I need a little more time.
Here, 'ещё' means 'just' or 'as recently as,' referencing a not-so-distant past moment.