The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
flak jacket
1 ENTRIES FOUND:
flak jacket
(noun)
flak jacket
noun
plural
flak jackets
flak jacket
noun
plural
flak jackets
Britannica Dictionary definition of FLAK JACKET
[
count
]
:
a special jacket that is worn by soldiers, police officers, etc., for protection against flak or bullets
—
called also
flak vest
ASK THE EDITOR
What are the plural forms of
check-in
,
passerby
, and
spoonful
?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
enamored
:
in a state in which you love, admire, or are very interested in something or someone
Learn More »