This is the 4390th most frequent Polish word.
idą
"idą" means "they are walking" or "they are going."
In this sentence, 'idą' describes a group of people currently walking towards the park.
Idą do parku na spacer.
They are going to the park for a walk.
Here, 'idą' is used to indicate the present activity of walking while performing another action.
Gdy idą, rozmawiają o swoich planach.
As they walk, they talk about their plans.
The word 'idą' is used metaphorically to mean 'are approaching' in the context of time.