What does the cryptic crossword clue "A queue, but Eeyore finally got his … (8)" mean?

The wordplay uses a deletion. TAIL (synonym="TAIL") + BACK (synonym="BACK") = TAILBACK The answer is TAILBACK.

A queue, but Eeyore finally got his … (8)

Guardian Cryptic #29450 | 11 Across | 2024-08-01 flower