Debauched sot with cigar, tottering around lunchtime (9)
I believe the answer is:
orgiastic
'debauched' is the definition.
(I've seen this before)
'sot with cigar tottering around lunchtime' is the wordplay.
'with' says to put letters next to each other.
'tottering' indicates an anagram.
'around' means one lot of letters goes inside another.
'lunchtime' becomes 'i' (1pm could be I on a clock with Roman numerals).
'sot' after 'cigar' is 'cigarsot'.
'cigarsot' with letters rearranged gives 'orgiastc'.
'orgiastc' enclosing 'i' is 'ORGIASTIC'.
(Other definitions for orgiastic that I've seen before include "Debauched" , "become overindulgent" , "Licentious" .)