This is the 3596th most frequent Arabic word.
أسير
"أسير" means "captive" or "prisoner" in English.
Here, 'أسيرُ' means 'I walk' and it is derived from the verb 'سار' which means 'to walk or proceed' in Arabic.
أسيرُ في الظلام بهدوء.
I walk quietly in the dark.
In this context, 'الأسير' means 'the prisoner' and it is a noun referring to someone who is captured or confined.
أطلقوا سراح الأسير.
They released the prisoner.
Here, 'أسيرُ' means 'I follow' metaphorically, implying proceeding along the same way or continuing a legacy.