Sing like a bird (6)
'sing like a bird' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for warble that I've seen before include "Sing with trilling note - like bawler" , "Sing - type of fly" , "Sing like a thrush" , "Sing with gentle trilling note like some birds" , "Sing with trilling note like a bird" .)
'sing like a bird' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for trill that I've seen before include "Quavering note" , "Fast alternation of notes" , "Shrill warble" , "bit of birdsong" , "Ornament" .)