The most common and most likely answer to this crossword clue is the 11 letter word TOASTMASTER
I've seen this crossword clue in The Times
T
O
A
S
T
M
A
S
T
E
R
More clues leading to the result TOASTMASTER
- One who introduces expert on Browning?
- One brought in to take lead in Cheers?
- Good health may be what he wishes for
- Public speaker, warm and adept
- Browning expert is good health professional
- MC Hammer set to star without old lady
- Most stare at silly person raising a glass
- MC is most excited about a cracking sample
- He orchestrates tributes to rebuilt team’s star
- Health-giver?
Buddy explains!

The straight part
We know that "One brought in to take lead in Cheers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one brought in to take lead in cheers = toastmaster.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 TOASTMASTER mean?
TOASTMASTER noun- A person who introduces speakers, and proposes toasts at a formal dinner; a master of ceremonies.