What is another word for tailfin?
Pronunciation: [tˈe͡ɪlfɪn] (IPA) 
If you're looking for alternative words for the term 'tailfin', there are a few options you might consider. For example, you could use the term 'back wing' to refer to the fin located at the rear of an airplane or car. 'Rear wing' and 'tail wing' are also valid terms to use. If you're looking for slightly more unusual words, you might try 'caudal fin' or 'dorsal fin', both of which are commonly used in fish biology and oceanography. However, for the most part, using the term 'tailfin' is likely to be the most straightforward and easily understood option in most contexts.
