Where does “petcock” come from?

petcock (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.

petcock (English): A small valve, spout, or faucet operated by hand,...

Definitions

  1. A small valve, spout, or faucet operated by hand,...

Ancestry of “petcock”, step by step

petcock 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 PET

StepLanguageWordMeaning
1EnglishPETInitialism of polyethylene terephthalate; Acronym...
2EnglishpetitionA formal, written request made to an official...
3Old Frenchpeticiunrequest; demand
4Latinpetitioan attack, thrust, blow; a request, petition,...
5Latin-tiōtion, -ation, -ing
6Latindissertātiō(spoken) dissertation, discourse, disquisition
7Latindissertusarranged, disposed; explained
8Latindissereresecond-person singular future passive indicative...
9Latindis-asunder, apart, in two; reversal, removal;...
10Latincalceusshoe
11Latincalxlimestone; chalk; the finish line
12Ancient Greekχάλιξsmall stone, pebble; gravel, rubble
Every word from Proto-Indo-European h₃-ép-kʷ-Every word from Proto-Indo-European pekʷ-Every word from Proto-Indo-European pékʷeti