There are multiple definitions - click on the translation that matches your context.

nacisk

rzeczownik

full

stress

noun

Definitions of stress

burden caused by pressure

Poverty, as well as excessive consumption by affluent populations, place damaging stress on the environment.

particular emphasis given to a point or argument

Both parties place stress upon the words of the statute "occupying and cultivating".

physical or mental tension

The theory underlying a lie detector test is that lying is stressful, and that this stress can be measured and recorded.