Real Dictionary

harrow
countable noun: A harrow is a piece of farm equipment consisting of a row of blades fixed to a heavy frame. When it is pulled over ploughed land, the blades break up large lumps of soil.

Harrow in American English
borough of Greater London, England: pop. 200,000
noun: a boarding school for boys, founded in 1571 at Harrow-on-the-Hill, an urban district near London, England

harrow in American English 1
a frame with spikes or sharp-edged disks, drawn by a horse or tractor and used for breaking up and leveling plowed ground, covering seeds, rooting up weeds, etc.
to take harrowing
intransitive verb: to become broken up by harrowing, as soil
noun: an agricultural implement with spikelike teeth or upright disks, drawn chiefly over plowed land to level it, break up clods, root up weeds, etc
transitive verb: to draw a harrow over (land)

harrow in American English 2
to rob, plunder, or pillage
transitive verb: to ravish; violate; despoil

Harrow in British English
noun: a borough of NW Greater London; site of an English boys' public school founded in 1571 at Harrow-on-the-Hill, a part of this borough. Pop: 210 700 (2003 est). Area: 51 sq km (20 sq miles)

harrow in British English 1
noun: any of various implements used to level the ground, stir the soil, break up clods, destroy weeds, etc, in soil
verb: to draw a harrow over (land)

harrow in British English 2
to plunder or ravish