Verb (5-dan, る, intransitive)
1. to hang down (from); to dangle; to swing; to be suspended
天井から何かがぶら下がっている。Something is hanging down from the ceiling.
2. to be within one's reach; to dangle (before one's eyes)
そのチャンスが目の前にぶら下がっているのですよ?That chance is dangling right before your eyes, you know?
3. to be completely reliant on; to be entirely dependent on