also: ちびふで
worn-out brush
Literally a brush with bristles worn down from use. Formal or literary term.
I sent my worn-out brush, used for many years, for maintenance.
my poor writing
Only with reading とくひつ
Humble expression used to deprecate one's own writing or calligraphy. Restricted to the reading とくひつ.
Though my writing is poor, I would like to say a few words of greeting.