What does the cryptic crossword clue "United at home triumphed, we understand (2,3)" mean?

The definition is "United". The wordplay uses a homophone (sounds like). IN (at home) + homophone of (we understand) “won”. The answer is IN ONE.

United at home triumphed, we understand (2,3)

Times Cryptic #28595 | 26 Across | 2023-05-05 flower