This is the 13391st most frequent Russian word.
надоили
"Надоили" means "obtained (milked) a certain amount of milk" in English.
This sentence uses 'надоили' in its most direct sense, indicating the action of milking a quantity of milk from cows.
На ферме надоили много молока за утро.
On the farm, a lot of milk was milked in the morning.
Here, 'надоили' is used metaphorically to describe the action of extracting or pressing out something, in this case, ink from pens.
Дети случайно надоили чернила из ручек, играя.
The children accidentally squeezed out ink from pens while playing.
In this example, 'надоили' is used figuratively to express acquiring or gathering detailed knowledge as if it were milk being extracted.