The Longman Dictionary has an example sentence that confuses me:
All of its close relatives except one make the whine but not the chuck.
What does "make the whine but not the chuck" mean in this context? No part makes any sense to me.
It's not an expression or any kind of figure of speech. 'Whine' and 'chuck' are parts of the mating call of certain types of frogs. Here's a video where you can hear both:
The whine is the longer part of the mating call, and the chuck is the clicking bit at the end.
Apparently the male Tungara frog has two distinct sounds in its mating call:
Males produce a call that consists of a whine, and can also add up to seven short chuck sounds to their mating call. A call consisting of both a whine and a chuck is considered a complex call.
Here "whine" and "chuck" are onomatopoetic representations of the sounds you hear in the video, and are not directly related to any other meaning of these words.