mola (n.1)

type of fish, 1670s, from Latin mola, literally "millstone" (from PIE root *mele- "to crush, grind"). So called because of the fish's shape and rough skin.

mola (n.2)

"false conception," c. 1600, from Latin mola "false conception," from earlier sense "salt cake;" literally "millstone" (from PIE root *mele- "to crush, grind").

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