Where does “plughole” come from?

plughole (English) comes from English hole, from Middle English hole, from Old English hol, from Proto-West Germanic hol, from Proto-Germanic hulą, from Proto-Germanic hulaz, from Proto-Indo-European ḱel- — to cover; to incline.

plughole (English): The hole at the bottom of a bath, sink or tub,...

Definitions

  1. The hole at the bottom of a bath, sink or tub,...

Ancestry of “plughole”, step by step

plughole traces back through two separate lines of ancestry.

via English hole

StepLanguageWordMeaning
1EnglishholeA hollow place or cavity; an excavation; a pit;...
2Middle Englishholehealthy; safe; whole, complete, full
3Old Englishhola hole, a hollow; calumny; slander
4Proto-West Germanicholhollow; hole
5Proto-Germanichuląa hollow; depression; hole
6Proto-Germanichulazhollow
7Proto-Indo-Europeanḱel-to cover; to incline

via English plug

StepLanguageWordMeaning
1EnglishplugA pronged connecting device which fits into a...
2Dutchplugwall plug
3Dutchplugge
4Middle Dutchpluggepeg, plug
5Old Dutchpluggi
6Proto-Germanicplugjaz
Every word from Proto-Indo-European ḱel-