Dictionaries are, can only be, historical records of word definitions. Words mean what people intend them to mean when they use them. At least one dictionary

Dictionaries are, can only be, historical records of word definitions. Words mean what people intend them to mean when they use them. At least one dictionary I have lists a definition: 'done with great effort or determination: you must make a concerted effort to curb this.' Also, when I think of myself doing a concerted effort I think of all my faculties working together, if that helps.