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Mother's Day a holiday to honor mothers, celebrated in the United States, Canada, and the United Kingdom on the second Sunday in May every year. People often give gifts or do nice things for their mothers on this day.
motion the act or particular way of changing place; movement. [5 definitions]
motion picture a series of pictures or photographs shown one after the other on a screen. The pictures or photographs appear so quickly that they seem to be moving. [2 definitions]
motivation an instance or the process of motivating. [3 definitions]
motive an idea, need, desire, or impulse that causes a person to act in a particular way or do a particular thing; reason.
motor a machine that causes motion or power. [4 definitions]
motorboat a boat that works by means of a motor.
motorcycle a vehicle with two wheels, a heavy frame, and an engine.
motorway a British word for a major public road on which one can drive at high speeds. Motorway often has the same meaning as highway or expressway.
motto a short saying used as a reminder of a belief or rules of behavior.
moulding a spelling of molding used in Canada and Britain. See molding for more information.
mound a raised pile; heap. [3 definitions]
mount1 to climb. [7 definitions]
mount2 a mountain or high hill.
mountain a land mass with great height and steep sides that is higher than a hill. [2 definitions]
mountaineer a person who climbs mountains for sport. [2 definitions]
mountain lion a common name for a puma, a large wild cat with tan fur. Mountain lions live in many parts of North and South America. They are carnivorous mammals. Mountain lions are also called cougars or panthers.
mountainous having many mountains. [2 definitions]
mountain range a group of connected mountains that were formed during the same time period.
mourn to feel or act very sad because of a death or great loss; grieve. [2 definitions]
mourning acts or feelings that express great sadness. [2 definitions]