Fellow licks oral on spiral geometry (5)
I believe the answer is:
helix
'spiral geometry' is the definition.
'helix' can be an answer for 'spiral' (I've seen this in another clue). I am not sure about the 'geometry' bit.
'fellow licks oral on' is the wordplay.
'fellow' becomes 'he' ('he' refers to a man).
'oral' indicates a 'sounds like' (homophone) clue (how it sounds when spoken).
'on' is a charade indicator (letters next to each other).
'licks' is a homophone of 'lix'.
'he'+'lix'='HELIX'
Can you help me to learn more?
(Other definitions for helix that I've seen before include "Spiral (maybe double)" , "Intertwining with another" , "Screwed coil" , "Object with a three-dimensional shape, like a corkscrew" , "Structure made up of a continuous series of loops" .)