What does the cryptic crossword clue "Idiot Russian dog endlessly runs away (4)" mean?

The definition is "Idiot". The wordplay uses a deletion. BO (synonym="BO") + ZO (synonym="ZO") = BOZO; definition: "Idiot" The answer is BOZO.

Idiot Russian dog endlessly runs away (4)

Independent Cryptic #12049 | 5 Down | 2025-05-22 flower