mola (n.1)youdaoicibaDictYouDict[mola 词源字典]
type of fish, 1670s, from Latin mola, literally "millstone" (see molar). So called because of the fish's shape and rough skin.[mola etymology, mola origin, 英语词源]
mola (n.2)youdaoicibaDictYouDict
"false conception," c. 1600, from Latin mola "false conception," from earlier sense "salt cake;" literally "millstone" (see molar).