...eighteenth of April, in Seventy-Five: April 18, 1775... one day before the fighting broke out at Lexington and the Revolutionary War began.

 

...his friend: his friend was Robert Newman,, who had the keys to the North Church, and lived right across the street from the church

 

...Hang a lantern aloft: hang it up high where it can be seen

 

...belfry-arch: the highest part of the steeple where the bell is hung

 

...opposite shore: Paul would wait across the river in Charlestown where he could look back and see the lights.

 

...Middlesex village and farm: Middlesex is the name of the county area surrounding Boston

 

...belfry-chamber: the highest place in the church steeple where the bell is hung

 

...lay the dead...: He is looking over a cemetery and imagining that the night wind is a guard's footsteps ("sentinel's tread")

 

...All is well!: He also imagines the night wind saying "All is well!" The mood is very eerie..

 

...somber rafters: boards and beams that make scary (somber) shadows in the moonlight

 

...boats on the shore: Now he knows the British are using the water route!

 

...grenadiers: British soldiers who fired the cannons and other heavy guns

 

...A line of black...like a bridge of boats: He sees the British soldiers rowing their boats across the water.

 

...The muster of men at the barrack-door: ...the sound of the British soldiers getting ready to leave.

 

...heavy stride: strong footsteps

 

...bridle: leather straps connected to the horse's head

 

...The fate of a nation was riding that night: The future of the United States was being made!

 

...steed: a fast horse

 

...saddle-girth: strap that holds the saddle on his horse

 

...alders: trees that often grow next to water

 

...gilded weathercock: a gold-colored ("gilded") weather vane in the shape of a rooster ("cock")

 

...And one was safe and asleep in his bed...Who at the bridge would be first to fall,: Some unknown person, safe asleep, would be the first to die the next day.

 

...musket-ball: an old-fashioned bullet

 

...defiance: bravery in fighting against something

 

...red-coats: British soldiers

 

...ball for ball: bullet for bullet, firing back and forth

 

...British regulars: the British soldiers

 

...bleating of the flock: sheep ba-a-ing

 

...aghast At the bloody work...: horrified at what was going to happen the next day

 

...spectral glare: the ghostly look of the dark windows

 

...Mystic: the Mystic River.... Paul Revere rides alongside this river.

 

...Kindled the land into flame with its heat.: Longfellow is comparing Paul Revere' Ride to a small spark that starts a great fire.

 

...impetuous: impatient

 

...mast and spar: ...parts of the ship that hold the sails... Here Longfellow says that with the moon behind them, they look like prison bars.

 

...moorings: place where a ship anchors

 

...muffled oar: Paul wrapped material around the oarlocks on his rowboat so they wouldn't make noise

 

...spectral: ghostly

 

...Somerset, British man-of-war: The Somerset was a 44-cannon British fighting ship (called a "man-of-war"). The British had the most fearsome fighting ships in the world in 1775.