8 down
Floating
object
waterbird’s
almost
turned
over
(4)
Floating object waterbird’s almost turned over (4)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
The definition is Floating object — a berg being a floating mass of ice. Take the waterbird GREBE, shorten it ("almost") to GREB, then "turned over" reverses it to land you on BERG.