strain

1 strain /ˈstreɪn/ noun
plural strains
1 strain
/ˈstreɪn/
noun
plural strains
Britannica Dictionary definition of STRAIN
1 
: a feeling of stress and worry that you have because you are trying to do too much, are dealing with a difficult problem, etc.
[count]
[noncount]
2 
: something that is very difficult to deal with and that causes harm or trouble
[count]
[noncount]
3 
: a force that pulls or stretches something : stress
[count]
— usually singular
[noncount]
4 
: an injury to a body part or muscle that is caused by too much tension, effort, or use
[count]
[noncount]
2 strain /ˈstreɪn/ verb
strains; strained; straining
2 strain
/ˈstreɪn/
verb
strains; strained; straining
Britannica Dictionary definition of STRAIN
1 
[+ object] : to injure (a body part or muscle) by too much tension, use, or effort
— compare sprain
2 
: to try very hard to do or get something
[no object]
— often + for
— often followed by to + verb
[+ object]
3 
a  : to be pulled or stretched in a forceful way
[no object]
[+ object]
— sometimes used figuratively
b  [no object] : to pull hard on or push hard against something — + at or against
— sometimes used figuratively
4 
[+ object] : to cause problems or trouble for (something)
5 
[+ object] : to separate a liquid from solid pieces by using a special device (called a strainer)

strain yourself

1 
: to injure yourself by making your muscles do too much work
2 
: to put a lot of physical or mental effort into doing something
3 strain /ˈstreɪn/ noun
plural strains
3 strain
/ˈstreɪn/
noun
plural strains
Britannica Dictionary definition of STRAIN
1 
[count] : a group of closely related plants or animals : variety — often + of
2 
[count] literary + somewhat old-fashioned : a usually bad quality that someone or something has — usually singular — usually + of
3 
[singular] formal + literary : a small amount of something
4 
[count] : a kind or sort of something — usually + of
5 
strains [plural] formal : the musical sounds of someone or something