The most common and most likely answer to this crossword clue is the 3 plus 4 letter word TEA TRAY
I've seen this crossword clue in The Guardian
T
E
A
T
R
A
Y
More clues leading to the result TEA TRAY
- Carrier of crockery needing milk container — a little light?
- A treaty in motion that carries
- What’s produced at three regularly? Yes!
- Fish underneath feeder, flat object
- Baby feeder, light flat object
- A treaty involved with food transport
- Tuck in with a beam after it finally appeared?
- Yes, for the most part, a tart prepared may be served from this
- Service carrier breaking a treaty
- Treaty revised to protect a carrier
Buddy explains!

The straight part
We know that "What’s produced at three regularly? Yes!" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case what’s produced at three regularly? yes! = tea tray.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.
What does TEA TRAY mean?
TEA TRAY noun- A tray for holding a tea service.