The definition of a mote is a speck or a very small piece of something.(noun)
An example of a mote is a particle of dirt.
See mote in Webster's New World College Dictionary
Origin: ME < OE mot, akin to Du, sawdust, grit
Origin: ME moten < OE motan, akin to Ger müssen: basic sense “it is permitted”; must (OE moste) is the pt. of this v.
See mote in American Heritage Dictionary 4
Origin: Middle English mot
Origin: , from Old English.
Origin: Middle English moten
Origin: , from Old English mōtan; see med- in Indo-European roots.
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