old shoes; worn-out shoes
Refers to shoes that are old, used, or worn out. A straightforward compound noun.
古靴をリサイクルショップに持っていった。
I took my old shoes to a recycling shop.
この古靴はもう履けない。
I can't wear these old shoes anymore.
Compound of 古 (ふる, 'old') and 靴 (くつ, 'shoes'). The reading ふるぐつ follows rendaku voicing of くつ to ぐつ.