The most common and most likely answer to this crossword clue is the 6 letter word BROLLY
I've seen this crossword clue in Financial Times
B
R
O
L
L
Y
More clues leading to the result BROLLY
- Protection from weather? British happy to forgo headpiece
- Wind cutting through walker’s wet-weather gear
- Outer portions of busby covering part said to provide elementary protection
- By eating a small loaf with this, one may avoid getting damper
- One provides cover by bringing in bread
- Wheel cuts through mushroom
- Personal cover taken out as protection against falls?
- British money originally taken out for protection against the elements
- What goes up when 7 comes down?
Buddy explains!

The straight part
We know that "elementary protection" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case elementary protection = brolly.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 BROLLY mean?
BROLLY noun- Umbrella.