Where does “cockbrain” come from?

cockbrain (English) comes from English cock, from Middle English cok, from Old English cōc, from Vulgar Latin cocus, from Latin coquus, from Latin coquō, from English Cook, from German kochen.

cockbrain (English): a stupid person

Definitions

  1. a stupid person

Ancestry of “cockbrain”, step by step

cockbrain traces back through two separate lines of ancestry.

via English cock

StepLanguageWordMeaning
1EnglishcockA male bird, "especially:"; A valve or tap for...
2Middle Englishcokrooster, cock; rooster crest, comb; heraldic...
3Old Englishcōca cook
4Vulgar Latincocus
5LatincoquusA cook; person who makes food
6Latincoquōto cook; prepare food
7EnglishCookA placename
8Germankochento cook, to prepare food; to boil; to be stirred...
9Middle High Germankochento cook
10Old High Germankohhōnto cook
11Proto-Germanickukōnąto cook
12Latincoqueresecond-person singular future passive indicative...
13Proto-Italickʷekʷōto cook
14Proto-Indo-Europeanpékʷetito be cooking; to ripen
15Proto-Indo-Europeanpekʷ-to cook; to ripen
16Proto-Indo-Europeanh₃-ép-kʷ-

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-Indo-European h₃-ép-kʷ-Every word from Proto-Indo-European pekʷ-Every word from Proto-Indo-European pékʷeti