Meeting spirited Irishman, civil engineer? (6)
I believe the answer is:
seance
'meeting spirited' is the definition.
(spiritual gathering)
'irishman civil engineer?' is the wordplay.
'irishman' becomes 'sean' (common Irish name).
'civil engineer?' becomes 'ce'.
'sean'+'ce'='SEANCE'
(Other definitions for seance that I've seen before include "Meeting held by a medium" , "Medium experience?" , "spiritual guidance" , "Spiritualist meeting chaired by medium" , "Sitting - can see (anag)" .)