There is a word 'hemiteleia'. Before you get too excited it is not even in the Oxford English Dictionary. But it is recorded by the following two authors:
Roberts, Chris (2006). Heavy Words Lightly Thrown: The Reason Behind Rhyme. Thorndike Press. ISBN 0-7862-8517-6.
Bryson, Bill (1990). Mother Tongue. Penguin. ISBN 0-14-014305-X.
I know that Cockney Rhyming Slang is not the precise subject under discussion, but in many instances it is designed to replace a word that the speaker wants to avoid. The way it works is that a word like 'stairs' will be replaced with 'apples and pears'. Since 'pears' rhymes with 'stairs' the speaker will drop the pears. They will then refer to 'stairs' as 'apples'.
In the case of the word 'cunt', the rhyming slang is 'Berkeley Hunt'. So anyone wishing to refer to a woman's genitals will just mention 'her berkeley'.
And so as not to appear sexist about this I should perhaps mention 'cobbler's awls', and we (chaps) all know what a kick in the 'cobblers' feels like.
Now apparently this system of subterfuge is referred to as 'hemiteleia'. It, and Rhyming Slang generally, are extensively discussed in a Wiki article: see.