That is the female version of lingams (5)

I believe the answer is:

yonis

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'female version of lingams' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'that is' is the wordplay.
'that' becomes 'yon' (archaic term meaning 'that').
'yon'+'is'='YONIS'

'the' acts as a link.

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I've seen this clue in The Sunday Times.

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