The most common and most likely answer to this crossword clue is the 7 letter word BOUNCER
I've seen this crossword clue in The Times
B
O
U
N
C
E
R
More clues leading to the result BOUNCER
- Heavy trampolinist?
- Heavy weight transported by our trains once
- Brother accommodates cat, one found outside club
- Lively ball requires tough doorman
- Working on Bruce’s delivery
- Person needing some weight to kick one out of bar?
- One who throws out a bad cheque
- Black cat right behind doorman
- Delivery man at the door
- Hostile delivery made by big fellow at front door?
Buddy explains!

The straight part
We know that "Heavy/trampolinist?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case heavy/trampolinist? = bouncer.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 BOUNCER mean?
BOUNCER noun- A member of security personnel employed by bars, nightclubs, etc to maintain order and deal with patrons who cause trouble.
- A short-pitched ball that bounces up towards, or above the height of the batsman’s head.
- An account or server (as with IRC and FTP) that invisibly redirects requests to another, used for anonymity or vanity.
- One who bounces; a large, heavy person who makes much noise in moving.
- A boaster; a bully.
- A bold lie.
- A liar.
- Something big; a good stout example of the kind.
- A bouncy castle.
- A kind of seat mounted in a framework in which a baby can bounce up and down.