Where does “slotless” come from?

slotless (English) comes from English slot, from Middle English slot, from Old French esclot, from Old Norse slóð, from Proto-Germanic slōdō.

slotless (English): Without a slot or slots

Definitions

  1. Without a slot or slots

Ancestry of “slotless”, step by step

slotless traces back through two separate lines of ancestry.

via English slot

StepLanguageWordMeaning
1EnglishslotA broad, flat, wooden bar, a slat, especially as...
2Middle Englishslot
3Old Frenchesclot
4Old Norseslóðtrail, track
5Proto-Germanicslōdō

via English less

StepLanguageWordMeaning
1EnglishlessTo a smaller extent or degree; comparative form...
2Middle Englishlesfalse; lying; deceptive; falsehood; a lie
3Old Englishlēasfalse, lax; false, void, loose; devoid of, loose...
4Proto-Germanic*laus
Every word from Proto-Germanic slōdō