This is the 1533rd most frequent Chinese word.
迫
"迫" means to force, compel, press, or approach closely.
In this sentence, "迫于" means "compelled by" or "forced due to" indicating an external circumstance enforcing the action.
他迫于无奈接受了这份工作。
He accepted this job reluctantly due to having no other choice.
Here, "迫" is used in the verb "迫使", meaning "to force", indicating an urgency or imposition that requires an action.
时间迫使他做出选择。
Time forces him to make a choice.
In this context, "迫近" means "to approach closely", indicating spatial proximity or nearness.