Wiktionary
n. A salaried professional or clerical worker.
Wikipedia
In many countries (such as Australia, Canada, United Kingdom, or the United States), a white-collar worker is a person who performs professional, managerial, or administrative work. White-collar work is performed in an office, cubicle, or other administrative setting. Other types of work are those of a blue-collar worker, whose job requires manual labor and a pink-collar worker, whose labor is related to customer interaction, entertainment, sales, or other service-oriented work. Many occupations blend blue, white and pink (service) industry categorizations.
Usage examples of "white-collar worker".
Something about my working clothes made me feel rugged, bigger than the average citizen, stronger than a white-collar worker--stronger even than an executive.
That he dressed like a farmer at least once, but that we believe him to be a white-collar worker.
Just an- middle-class white-collar worker earning his living, : to remember.