(physics) deformation of a physical body under the action of applied forces
"The metal rod began to strain as the heavy weight pulled it downward, visibly deforming its shape before snapping."
a succession of notes forming a distinctive sequence
"she was humming an air from Beethoven"
(psychology) nervousness resulting from mental stress
"his responsibilities were a constant strain"
"the mental strain of staying alert hour after hour was too much for him"
injury to a muscle (often caused by overuse); results in swelling and pain
"After lifting the heavy box, I felt sharp pain in my back that turned out to be a strained muscle."
Race; lineage, pedigree.
"The excessive lifting caused a painful strain in his back muscles."
The act of straining, or the state of being strained.
In plain English: Strain is physical pain that happens when you pull something too hard and hurt your muscles, tendons, or ligaments.
"The old bridge groaned under the heavy strain of traffic during rush hour."
remove by passing through a filter
"filter out the impurities"
To hold tightly, to clasp.
"The ancient text was believed to describe how a particular spirit strain could only be generated through the union of two celestial beings."
To beget, generate (of light), engender, copulate (both of animals and humans), lie with, be born, come into the world.
In plain English: To strain something means to pull it hard enough that you are worried about breaking it.
"The heavy weight made her back strain during the move."
Usage: Use "strain" as a verb primarily when describing physical tension that causes something to stretch beyond its limit or become damaged. Avoid confusing it with synonyms like "stretch," which implies lengthening without necessarily implying damage.
A surname.
"Many distinguished members of the Strain family have served as ambassadors over the decades."
The word strain comes from the Middle English meaning of "race" or "stock," which originally traced back to an Old English sense of "wealth" and a Proto-Germanic root for "treasure." This lineage ultimately derives from a very old Indo-European concept related to spreading things out, such as strewing.