Where does “rattlebrain” come from?

rattlebrain (English) comes from English rattle, from Arabic رَطْل, from Classical Syriac ܪܝܛܠܐ, from Classical Syriac ܠܝܛܪܐ, from French litre, from Medieval Latin litra, from Ancient Greek λίτρα, from Proto-Italic *līðrā — ingot.

rattlebrain (English): A rattlebrained person

Definitions

  1. A rattlebrained person

Ancestry of “rattlebrain”, step by step

rattlebrain traces back through two separate lines of ancestry.

via English rattle

StepLanguageWordMeaning
1Englishrattlea sound made by loose objects shaking or...
2Arabicرَطْل
3Classical Syriacܪܝܛܠܐ
4Classical Syriacܠܝܛܪܐlibra, pound
5Frenchlitrelitre
6Medieval Latinlitra
7Ancient Greekλίτραlitra, a Sicilian silver coin; libra, a unit of...
8Proto-Italic*līðrāingot

via English brain

StepLanguageWordMeaning
1EnglishbrainThe control center of the central nervous system...
2Middle EnglishbraynThe brain or cerebrum; the organ of thought;...
3Old Englishbræġnbrain
4Proto-West Germanic*bragnbrain
5Proto-Germanicbragnąbrain
6Proto-Indo-Europeanmregʰnomskull, brain
7Proto-Indo-Europeanmen-to think, mind; spiritual activity; to stay,...
Every word from Proto-Italic *līðrā