1) A covert crack-house, usually specialised in stock of the magic mushroom variety. Referred to in 'La Belle Dame Sans Merci' where the writer
John Keats expresses his love for narcotics. One interpretation is that the 'Elfin Grot' is the
home place of 'La Belle Dame' where she seduces the knight. Another interpretation, the right one, is that John Keats is a smackhead.
2) The name given to a
witch's vagina.
1)
Male 1: This is good stuff, where dya get it?
Male 2: The
skanked up Elfin Grot.
2)
Male: You'd be amazed what I can do with my wand ;)
Female:
Go on then,
whack it in me Elfin Grot.