(US, Canada) Abbreviation of March (month).

(UK, rail transport) Initialism of Midland Railway.

Clipping of MRI. / (pharmacology, medicine) Initialism of modified release. / (cardiology) Initialism of mitral regurgitation. / (biochemistry) Initialism of mineralocorticoid receptor.

(education, special education) Initialism of mentally retarded.

(folklore) The wife of Santa Claus.

(Britain, informal) A charlady.

A personification of the Japanese housewife speculators, who are strong enough to affect international markets, especially foreign exchange markets.

An older woman who seduces a younger man.

Of a woman: to seduce (a younger man).

simple past tense and past participle of Mrs. Robinson