Where does “nightguard” come from?

nightguard (English) comes from English guard, from Middle English garde, from Old French guarde, from Old French guarder, from Frankish wardēn, from Proto-Germanic wardāną, from Proto-Germanic *warduz, from Proto-Indo-European wēr- — to burn; to cover, heed, notice; squirrel.

nightguard (English): A guard worn on the teeth to prevent damage from...

Definitions

  1. A guard worn on the teeth to prevent damage from...

Ancestry of “nightguard”, step by step

nightguard traces back through two separate lines of ancestry.

via English guard

StepLanguageWordMeaning
1EnglishguardA person who, or thing that, protects or watches...
2Middle Englishgardeguardianship, safeguarding, covering, authority;...
3Old Frenchguardeprotection; act of protecting; guard; inflection...
4Old Frenchguarderto protect; to guard; to look at
5Frankishwardēnto protect; to guard, protect, watch over; to...
6Proto-Germanicwardānąto guard, protect, watch over
7Proto-Germanic*warduz
8Proto-Indo-Europeanwēr-true
9Proto-Indo-Europeanwer-to burn; to cover, heed, notice; squirrel

via English night

StepLanguageWordMeaning
1EnglishnightThe period between sunset and sunrise, when a...
2Middle EnglishnyghtAlternative form of nighte; Alternative form of...
3Middle Englishnightenight
4Old EnglishnyhtAlternative form of niht
5Proto-West Germanicnahtnight
6Proto-Germanicnahtsnight
7Proto-Indo-Europeannókʷtsnight
8Proto-Indo-Europeannegʷ-bare, naked
Every word from Proto-Indo-European wer-Every word from Proto-Indo-European wēr-Every word from Proto-Germanic *warduz