(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

Initialism of mother of the bride.

A large or disorderly group of people; especially one bent on riotous or destructive action. / (archaic) The lower classes of a community; the rabble.

(transitive) To crowd around (someone), sometimes with hostility. / (transitive) To crowd into or around a place.

(obsolete) A promiscuous woman; a harlot or wench; a prostitute. / A mob cap.

(transitive) To wrap up in, or cover with, a cowl.

mobile phone

The Mafia: any particular mafia, mentioned uniquely within the discussion's established or implicit context, usually and especially the Sicilian–Italian–Italian-American one (especially in American English) but occasionally others (e.g., the Russian one, the Japanese one).

simple past tense and past participle of mob