1.become broader or wider or more extensive;
The road widened
2.make (clothes) larger;
Let out that dress--I gained a lot of weight
3.make wider;
widen the road
4.extend in scope or range or area;
The law was extended to all citizens
widen vt. 1. 放宽;加宽;扩大 The city is widening this street. 该城正在拓宽这条街。 vi. 1. 变宽;扩大