strain Definition

lineage, ancestry

a group of presumed common ancestry with clear-cut physiological but usually not morphological distinctions; broadly : a specified infraspecific group (such as a stock, line, or ecotype)

kind, sort

to draw tight : cause to fit firmly

to stretch to maximum extension and tautness

to exert (oneself, one's senses, etc.) to the utmost

an act of straining or the condition of being strained: such as

bodily injury from excessive tension, effort, or use; especially : one resulting from a wrench or twist and involving undue stretching of muscles or ligaments

excessive or difficult exertion or labor

extensometer

to be very eager

to try very hard to hear

to injure oneself by making one's muscles do too much work

to put a lot of physical or mental effort into doing something

to try very hard to see

to lift one's head as high as possible by stretching one's neck

any of various painful musculoskeletal disorders (such as carpal tunnel syndrome or tendinitis) caused by cumulative damage to muscles, tendons, ligaments, nerves, or joints (as of the hand or shoulder) from highly repetitive movements —called also repetitive stress injury