What does the cryptic crossword clue "A gust blowing in European river (5)" mean?

The definition is "river". The wordplay uses an anagram. anagram of A + GUST = TAGUS; definition: "river" The answer is TAGUS.

A gust blowing in European river (5)

Daily Mail Cryptic #17445 | 15 Down | 2024-09-13 flower