Aún no tenemos significados para "broach before".
1But such an idea no one could have ventured to broach before the exile.
2It was a subject they'd never broached before, despite Laurel knowing it must have been difficult for her.
3(It was evident that the subject had been broached before.)
4The matter of Field's going had been broached before, and, when told of it, the Wilkins pair had been prompt with their protests.