Where does “codon” come from?

I need to work through this chain carefully, but I notice there's a problem: the headword is "codon" but the chain provided traces "code." These are different words. Additionally, the chain shows "Latin caudex" twice and "Proto-Indo-European gʷet-" twice, which seems like data errors, and includes "Latin cubare" at the end, which doesn't fit a linear etymology. Given the instruction to "state only what the chain supports" and not invent steps, I cannot write an accurate sentence because: 1. The headword (codon) doesn't match the chain (code) 2. The chain appears corrupted/incomplete 3. The meaning for codon is marked unknown Could you verify the etymology chain for "codon"? A proper chain would help me write an accurate summary sentence.

codon (English): A handbell used for summoning monks; The "bell"...

Definitions

  1. A handbell used for summoning monks; The "bell"...

Ancestry of “codon”, step by step

codon traces back through two separate lines of ancestry.

via English code

StepLanguageWordMeaning
1EnglishcodeA short symbol, often with little relation to the...
2Middle EnglishcodeAny kind of plant gum; a gummy or resinous...
3Old Englishcoddbag; sack; husk
4Proto-Germanickuddôbag; pod; sack; purse
5Proto-Indo-Europeangewt-sack; pouch; pouch, sack
6Proto-Indo-Europeangū-to bend; curve; arch; vault; to bow, bend, arch,...

via Latin codon

StepLanguageWordMeaning
1Latincodoncodon: a handbell used for summoning monks
2Ancient Greekκώδωνbell

Words derived from “codon

Every word from Proto-Indo-European gū-