Where does “latchkey” come from?

Latchkey combines English latch, from Proto-Germanic latjaną meaning to seize, with English key, from Proto-Germanic *slūbilaz, ultimately tracing to Proto-Indo-European leǵ- meaning to lie or lay.

latchkey (English): A key, especially to an outside door; A child who...

Definitions

  1. A key, especially to an outside door; A child who...

Ancestry of “latchkey”, step by step

latchkey traces back through two separate lines of ancestry.

via English latch

StepLanguageWordMeaning
1EnglishlatchTo close or lock as if with a latch; To catch;...
2Middle Englishlatche
3Middle Englishlacchento seize, catch, grasp; to seize, catch
4Old Englishlæċċanto grasp, take hold of, catch, seize”; to grasp,...
5Proto-GermaniclakjanąTo cause to wet; moisten
6Proto-Indo-Europeanleǵ-to gather, collect, with derivatives meaning to...

via English key

StepLanguageWordMeaning
1EnglishkeyAn object designed to open and close a lock; An...
2EnglishcayA small, low island largely made of sand or coral
3SpanishCayokey island
4Taínocayosmall island
Every word from Proto-Indo-European leǵ-