A heavy iron block used in metalworking, on which metal is hammered and shaped.
The blacksmith is hammering iron on the anvil.
Variant without okurigana; less common but still seen.
Rare variant combining 鉄 and no okurigana.
Rare variant using 鉄 (iron) instead of 金 (metal).
Compound of 金 (kana, 'metal') and 敷き (shiki, 'spreading' or 'laying'), referring to a metal block laid down for hammering. The reading かな is an older form for metal.