Where does “eching” come from?

eching (Middle English) comes from Middle English eken, from Old English ǣcen, from Proto-Germanic aikīnaz, from Proto-Germanic -īnaz, from Proto-Indo-European -iHnos, from Proto-Indo-European -no- — adjectival suffix.

Ancestry of “eching”, step by step

StepLanguageWordMeaning
1Middle EnglishekenAlternative form of oken; Alternative form of...
2Old Englishǣcenof oak
3Proto-Germanicaikīnazoaken, made of oak
4Proto-Germanic-īnaz-en
5Proto-Indo-European-iHnosCreates adjectives of materials
6Proto-Indo-European-no-adjectival suffix
Every word from Proto-Indo-European -no- →Every word from Proto-Germanic -īnaz →Every word from Proto-Germanic aikīnaz →