The most common and most likely answer to this crossword clue is the 6 letter word THRONG
I've seen this crossword clue in The Daily Telegraph
T
H
R
O
N
G
More clues leading to the result THRONG
- Pack skimpy garment to cover middle of torso
- Whip restraining leader of riotous mob
- Cram right into skimpy underwear
- Lots of people run in underpants
- We backed out of the wrong crowd
- Romeo donning skimpy garment for crowd
- Host in minimal attire outside front of restaurant
- Mob beginning to riot — not much cover outside
- Host runs wearing bikini bottom?
- Pack skimpy underwear as clothing for run
Buddy explains!

The straight part
We know that "Host" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case host = throng.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 THRONG mean?
THRONG noun- A group of people crowded or gathered closely together.
- A group of things; a host or swarm.
- To crowd into a place, especially to fill it.
- To congregate.
- To crowd or press, as persons; to oppress or annoy with a crowd of living beings.
- Filled with persons or objects; crowded.
- Busy; hurried.