出典:Wiktionary
出典:『Wiktionary』 (2026/05/13 23:46 UTC 版)
From 中期英語 hamer, from 古期英語 hamor, from Proto-West Germanic *hamar, from Proto-Germanic *hamaraz (“tool with a stone head”) (compare West Frisian hammer, Low German Hamer, Dutch hamer, German Hammer, Danish hammer, Swedish hammare). This is traditionally ascribed to Proto-Indo-European *h₂eḱmoros, from *h₂éḱmō (“stone”), but see *hamaraz for further discussion.
(declare a defaulter on the stock exchange): Originally signalled by knocking with a wooden mallet.
hammer (third-person singular simple present hammers, present participle hammering, simple past and past participle hammered)
出典:Wikipedia
出典:『Wikipedia』 (2011/08/01 18:48 UTC 版)
A hammer is a tool meant to deliver an impact to an object. The most common uses are for driving nails, fitting parts, forging metal and breaking up objects. Hammers are often designed for a specific purpose, and vary widely in their shape and structure. The usual features are a handle and a head, with most of the weight in the head. The basic design is hand-operated, but there are also many mechanically operated models for heavier uses, such as steam hammers.
![]()