Some taverna's lantern at an angle (6)
I believe the answer is:
'at an angle' is the definition.
(I've seen this in another clue)
'some taverna's lantern' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'ASLANT' can be found hidden inside 'tavernas lantern'.
(Other definitions for aslant that I've seen before include "sloping away?" , "Not true" , "At an oblique angle" , "Skew-whiff" , "on a slope" .)