What does the cryptic crossword clue "Royal house about to return delivery (6)" mean?

The definition is "delivery". The wordplay uses charade, reversal. YORK (synonym of "Royal house") + RE (synonym of "return") [reversal: "about"]; definition: "delivery" The answer is YORKER.

Royal house about to return delivery (6)

Telegraph #30659 | 4 Down | 2024-07-06 flower

Visit Telegraph's puzzle site →

Also seen in

Guardian Cryptic #29085 (2023-06-01)