18 across
Comeback
of
Twilight
mostly
a
bit
of
froth
(3)
Comeback of Twilight mostly a bit of froth (3)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at a bit of froth — that's your definition, a single SUD. Twilight gives you DUSK, then mostly drops the last letter to leave DUS, and Comeback reverses it to land on your answer.