mensal (adj.1)youdaoicibaDictYouDict[mensal 词源字典]
"monthly," 1860, from Latin mensis "month" (see moon (n.)) + -al (1).[mensal etymology, mensal origin, 英语词源]
mensal (adj.2)youdaoicibaDictYouDict
"pertaining to or used at a table," mid-15c., from Late Latin mensalis, from Latin mensa "table" (see mesa).