emvowel
To replace a portion of a person's name with a dash in printing, in order to avoid libel.
dated
And as for all the words I embowel, or rather emvowel, I will never ſo mangle them, but they ſhall be all as well known as if they retained every vowel in them.
Where it comes from
Coined by Henry Fielding (1707-1754) as a jocular alteration of embowel (“disembowel”).
Adapted from the Wiktionary entry emvowel (CC BY-SA 4.0).