the shirt off someone's back

US /ðə ʃɜrt ɔf ˈsʌm.wʌnz bæk/
UK /ðə ʃɜrt ɔf ˈsʌm.wʌnz bæk/
"the shirt off someone's back" picture
1.

自分のシャツさえも与える, 非常に寛大である

to be extremely generous, to give everything one has

:
He's so kind, he'd give you the shirt off his back if you needed it.
彼はとても親切で、もし必要なら自分のシャツさえもくれるだろう。
My neighbor is the kind of person who would give you the shirt off their back.
私の隣人は、自分のシャツさえもくれるような人だ。