出典:Wiktionary
出典:『Wiktionary』 (2025/11/28 20:14 UTC 版)
From 中期英語 birchen, birken, from 古期英語 bircen, *biercen, beorcen (“made of birch, birchen”), from Proto-Germanic *birkīnaz (“made of birch”), equivalent to birch + -en. Cognate with Scots birken, birkin (“birchen”), Dutch berken (“birchen”), Low German berken (“birchen”), German birken (“birchen”).