(Ireland, New England, idiomatic, archaic, sometimes humorous) A generic, cheerful greeting said to someone in the morning.

Alternative spelling of mouth breather

One should not unappreciatively question or inspect a gift too closely.

To hit the moon, with a rocket or by other means. / (figuratively, by extension) To attain great heights, a high value, or a numerically high measurement.

(idiomatic, euphemistic) The characteristic of regularly using vulgar language, especially strong profanities. / (idiomatic) A person having this characteristic.

(idiomatic) An authentic source; someone who directly experienced or witnessed something.

(art) Any of many styles of art having an underlying philosophy or goal; many of them have names with an -ism suffix.

The country in which a person (or group of people) was born; motherland; homeland.

(nautical) Initialism of man overboard, used e.g. on the emergency button of a satellite navigator. By pushing the button the operator stores the coordinates of a man overboard incident for easy access.

(dentistry) Initialism of mesio occlusal buccal. / Initialism of missing on blog, the act of abandoning ones blog (or weblog) for an extended period of time