IPA: /ˈθrɛdˌfɪn/
KK: /θrɛdˌfɪn/
A type of tropical fish known for its long, thin rays that extend from its pectoral fins.
The threadfin swam gracefully through the coral reef, its fins trailing behind it.
Threadfin → The word is formed from "thread" (from Old English *þræd*, meaning a thin strand) and "fin" (from Old English *finn*, meaning a fin or wing). The term "threadfin" refers to a type of fish characterized by its long, thread-like fins.
Think of a 'thin strand' ('thread') and a 'fin' ('fin') — together they describe a fish with long, thin fins.