Apart from the fact that both of these words pre-date the Internet and/or computer nerds. The word dreadnaught is a neologistic spelling of dreadnought; which i

Apart from the fact that both of these words pre-date the Internet and/or computer nerds. The word dreadnaught is a neologistic spelling of dreadnought; which is a portmanteau contraction of the phrase "fear God, and dread nought". The first historical use as the name of a naval vessel is HMS Dreadnought (1553). The word claymore is another very old word, 14th vs 15th century. It comes from Scots Gaelic and literally means "great sword". Since both words are terms for two weapons of war it probably is more likely to be known by men.