axe, hatchet
鈇 centers on a cutting tool with a heavy blade: an axe or hatchet.
鈇 combines 金 (metal) with 夫, which likely contributes the sound and may represent a man wielding an axe. The character denotes a metal axe or hatchet.
The left side 金 means metal, and the right side 夫 looks like a man with arms outstretched. Imagine a metal axe held by a strong man: 鈇 is an axe.
For フ, picture a furious man swinging an axe: the 'fu' in furious cues フ, and the metal blade cuts through the air.