Whale feature (5)
I believe the answer is:
spout
'whale feature' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for spout that I've seen before include "Talk (rubbish); part of pot" , "Mouth of a kettle" , "Speak in a declamatory way; pipe for liquid" , "Make speech; part of teapot" , "Projecting tube through which liquid is poured" .)