long metal chopsticks (for handling charcoal, esp. in a brazier); fire tongs
「火箸」 has another reading with different meanings.
火箸で炭をつかんだ。
I picked up charcoal with fire tongs.
古い火箸が蔵から出てきた。
Old fire tongs came out of the storehouse.
祖母は火鉢と火箸を愛用した。
My grandmother loved using a brazier and fire tongs.