18 down
Buys
barrier
to
stop
litter
droppers
(8)
Buys barrier to stop litter droppers (8)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
The definition is Buys — as in swallows a story, accepts something uncritically. For the wordplay, litter droppers gives you SOWS (female pigs, and pigs do have litters), and you slot barrier, WALL, inside to get S(WALL)OWS.