# Meaning of the word 'croton'

This is but-2-yne, which is also known as crotonylene.

This is but-2-enal which is also known as crotonaldehyde.

Coming to my query, what does the word croton indicate? Does it refer to $\ce{CH3-CH=CH-R}$? Can this prefix be used anywhere or only for pre-specified compounds? If it can be used anywhere, then can but-2-en-1-ol be called as crotonalcohol or hydroxycroton?

• Note that the structure of but-2-yne shall be linear. – user7951 Mar 27 '18 at 16:51