Function: noun
Date: 1897
: any of a group of vulgar or obscene words typically made up of four letters broadly : a taboo word or topic <tax is a four-letter word to him>
Function: noun
Date: 1897
: any of a group of vulgar or obscene words typically made up of four letters broadly : a taboo word or topic <tax is a four-letter word to him>
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012