Some sexy group needing erection (4)
I believe the answer is:
orgy
This might be a double definition.
'some sexy group' is the first definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'erection' is the second definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe there's a link between them I don't understand?
'needing' acts as a link.
Can you help me to learn more?
(Other definitions for orgy that I've seen before include "Bacchanal" , "debauched scene" , "riot" , "Wild overindulgent party" , "Rumpy-pumpy party" .)