The most common and most likely answer to this crossword clue is the 7 letter word BARRACK
I've seen this crossword clue in Independent
B
A
R
R
A
C
K
More clues leading to the result BARRACK
- Ban joint accommodation for soldiers
- Loudly disapprove of incomplete accommodation
- Obama has to take Republican taunt
- Jeer when Obama embraces Republican
- Jeer, as local put on stretcher
- Express disapproval of army accommodation
- Obama receiving Republican heckle
- Demonstrate against Obama, embracing leader of Republicans
- Don’t allow to torment and jeer
- Garrison placed ban on torture
Buddy explains!

The straight part
We know that "Jeer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case jeer = barrack.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 BARRACK mean?
BARRACK noun- (chiefly in the plural) A building for soldiers, especially within a garrison; originally referred to temporary huts, now usually to a permanent structure or set of buildings.
- (chiefly in the plural) primitive structure resembling a long shed or barn for (usually temporary) housing or other purposes
- (chiefly in the plural) any very plain, monotonous, or ugly large building
- A movable roof sliding on four posts, to cover hay, straw, etc.
- (usually in the plural) A police station.
- To house military personnel; to quarter.
- To live in barracks.
- To jeer and heckle; to attempt to disconcert by verbal means.
- To cheer for or support a team.