How is Bondage hoarse an allusion?

Bondage hoarse in Robert Hayden’s poem, Those Winter Sundays, can be seen as an allusion to the emotional damage and distress caused by the father’s neglect and lack of physical affection towards the son. The phrase “bondage hoarse” suggests the father’s voice is strained or broken from holding back his true feelings and inability to express his love openly. This hints that the father’s emotional struggles and internal battles have taken a toll on his voice, leaving him hoarse and unable to communicate his emotions effectively.