aceroseyoudaoicibaDictYouDict[acerose 词源字典]
"Full of or resembling chaff. rare", Early 18th cent.; earliest use found in Nathan Bailey (d. 1742), lexicographer and schoolmaster. From classical Latin acerōsus full of or mixed with chaff from acer-, acus chaff + -ōsus.[acerose etymology, acerose origin, 英语词源]