Millimeter, representing a unit of measurement for a round object such as a pearl
Maraca: A percussion instrument that consists of a hollow-gourd rattle that contains such things as pebbles or seeds and is usually played in pairs Masses: Songs that were sung in Catholic churches by the church choir Melatonin: A hormone, which comes from serotonin that stimulates color change in animals such as reptiles Melody: A pleasing arrangement of sounds Minstrel: A musician who travels a country to sing and recite poetry Monophonic: A single melodic line Muses: In Greek Mythology they were the nine daughters of Minemosyine and Zeus who presided over the different arts or sciences
mm is an abbreviation for millimetre or millimetres. a 135mm lens. 0.25mm of rain. Myanmar (in Internet addresses). millimeter. the written abbreviation of millimetre or millimetres. used when someone else is speaking and you want to show that you are listening, that you agree with them, or that you are thinking about what they have said
millimeter, a unit of measurement which is often used to size crochet hooks and knitting needles - its use removes the problem of converting different countries' sizing systems (For the curious, there are about 25 mm to an inch)