The most common and most likely answer to this crossword clue is the 7 plus 3 letter word WHEELIE BIN
I've seen this crossword clue in The Guardian
W
H
E
E
L
I
E
B
I
N
More clues leading to the result WHEELIE BIN
- Joyful exclamation: morning in bed devouring book that’s trashy?
- Refuse place to circle that’s come to backward point
- When to take train, that is? Having two, it departs full and returns empty
- With contracted bill, whine EE’s terrible mobile carrier
- Male priest in trap next to popular place to dump rubbish
Buddy explains!
The straight part
We know that "it departs full and returns empty" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it departs full and returns empty = wheelie bin.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.