The most common and most likely answer to this crossword clue is the 5 letter word WIDEN
I've seen this crossword clue in The Guardian
W
I
D
E
N
More clues leading to the result WIDEN
- Expand study by women's organisation
- Extra new stretch
- . Broaden women’s group study
- Make broader jam-makers retreat
- Make Broad an extra batsman at the end
- Starters of whelks in diner excellent, nice spread
- Let out new clothing DI brought back
- Extend directions for preserving fish
- Increase extent of victory over gutless Dundee
- Expand Women’s Institute’s meeting-place
Buddy explains!

The straight part
We know that "Make Broad" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case make broad = widen.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 WIDEN mean?
WIDEN verb- To become wide or wider.
- To make wide or wider.
- To let out clothes to a larger size.
- To broaden or extend in scope or range.
- To convert to a data type that can hold a larger number of distinct values.