22 across
Learnt
to
play
the
horn
(6)
Learnt to play the horn (6)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
"To play" is your anagram indicator here — it's telling you to rearrange the letters of Learnt, and if you shuffle those six letters around you land on ANTLER. The definition is horn, the bony growth you'd find on a deer.