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