Straight
The word 'estrecho' in Spanish does not mean 'straight' in English. It actually translates to 'narrow'. Estrecho can be used to describe anything from a narrow road, a gap or even a tight squeeze in a situation. It is also used to describe close relationships between people, such as 'estrecha amistad' which means 'close friendship.'
I live in a very narrow alley.
The word 'estrecho' is used here to describe the narrowness of a physical space, specifically an alley. This implies that the alley is not wide, possibly difficult to navigate through.
The bridge is too narrow for trucks.
In this example, 'estrecho' refers to the insufficient width of a bridge to accommodate trucks. This suggests that the bridge has limits on the type and size of vehicles that may safely cross it.
There is a close link between stress and health.
The word 'estrecho' in this sentence is used in a more abstract sense, describing a close or tight link, relationship or connection between stress and health. Hence, any changes in one may directly affect the other.