We use 'dwell' when someone lives or stays in a place for a long time. It means they have a home or stay there.
They dwell in the small village.
I dwell on the second floor.
This meaning of 'dwell' is about thinking or talking about something for a long time. Usually it is something sad or bad.
Don’t dwell on your mistakes.
He dwells on bad memories.
'Dwell' can mean to stay in a place or state for a while, often about sounds, smells, or feelings that continue.
The sound dwells in the room.
The smell dwells in the air.
In machines or technology, 'dwell' means to stop or wait for a short time before continuing.
The camera lens dwells for a second.
The machine dwells before moving again.
This use means to talk or write about a topic for a long time, often giving many details.
She dwells on every detail.
He dwells on the story for hours.
'Dwell' can be a noun in technical fields to mean the time a part stays still during motion in machines.
The dwell allows the piston to rest.
Longer dwell improves machine control.