Real Dictionary

mow
verb: If you mow an area of grass, you cut it using a machine called a lawnmower.

mow in American English 1
to cut down (standing grass or grain) with a sickle, scythe, lawn mower, etc.
intransitive verb: to cut down grass, grain, etc
transitive verb: to cut down (grass, grain, etc.) with a scythe or a machine

mow in American English 2
a stack or heap of hay, grain, etc., esp. in a barn
noun: the place in a barn where hay, sheaves of grain, etc., are stored
transitive verb: to store (hay) in a barn

mow in American English 3
grimace
intransitive verb: to make mows, mouths, or grimaces
noun: a wry or derisive grimace

mow in British English 1
verb: to cut down (grass, crops, etc) with a hand implement or machine

mow in British English 2
noun: the part of a barn where hay, straw, etc, is stored