/ ˈbrɔːdn; NAmE / verb
1.
[ v ] to become wider :
Her smile broadened.
2.
to affect or make sth affect more people or things :
[ vn ]
a promise to broaden access to higher education
The party needs to broaden its appeal to voters.
[also v ]
3.
[ vn ] to increase your experience, knowledge, etc. :
Few would disagree that travel broadens the mind (= helps you to understand other people's customs, etc.) .
Spending a year working in the city helped to broaden his horizons .
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PHRASAL VERBS
- broaden out
SYN widen out