Warble (5)
'warble' is the definition.
(I know this)
This is the entire clue.
(Other definitions for trill that I've seen before include "sing" , "Shake" , "Sound of rapidly alternating notes" , "bit of birdsong" , "Warbling sound made by a songbird" .)
'warble' is the definition.
(I know this)
This is all the clue.
(Other definitions for yodel that I've seen before include "Sing by alternating between normal voice and falsetto" , "Loftily call" , "Alpine song or call" , "Sing like the Lonely Goatherd?" , "Practise Alpine singing" .)
'warble' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for croon that I've seen before include "Sing in a soft low tone" , "Sing with a soft voice" , "Sing softly" , "Sing like Bing" .)