1 literature : to expurgate (something, such as a book) by omitting or modifying parts considered vulgarbowdlerize the text2 : to modify by abridging, simplifying, or distorting in style or content
Few editors have achieved the notoriety of Thomas Bowdler. Bowdler was trained as a physician, but when illness prevented him from practicing medicine, he turned to warning Europeans about unsanitary conditions at French watering places. He then carried his quest for purification to literature, and in 1818 he published his Family Shakspeare [sic], a work in which he promised that "those words and expressions are omitted which cannot with propriety be read aloud in a family." The sanitized volume was popular with the public of the day, but literary critics denounced his modifications of the words of the Bard. Bowdler applied his literary eraser broadly, and within 11 years of his death in 1825, the word bowdlerize was being used to refer to expurgating books or other texts.
From Oxford Dictionaries:
Bowdlerize (or bowdlerise) means ‘remove material that is considered improper or offensive from (a text or account), especially with the result that the text becomes weaker or less effective’
Bowdlerize owes its existence to Thomas Bowdler. This came about because of Thomas Bowdler’s The Family Shakspeare (retitled The Family Shakespeare in subsequent editions, following the differing trends for spelling the playwright’s name). This was published in 1818, in 10 volumes; an advertisement quoting the preface declared Bowdler’s intention:


