Theory:

Meaning of difficult words from the poem "Little Sarah":
 
Numbers
Word
Meanings
1.
MillerA person who owns a corn mill.
2.
Meal Snack.
3.
Fetch Bring.
4.
MaidenYoung girl.
5.
Bake Oven-cooked.
6.
CornfieldA field of corn.
7.
Plough Cultivate the land before sowing.
8.
Sow Plant seed in the soil.
9.
MillA factory equipped with machinery for grinding grain into flour.
10.
Ached Pained.
11.
PloughmanA person who tills the soil.
12.
GrainSeeds, Kernel.
13.
Johnny-cakeAn early American staple food, corn meal flat bread.
14.
BarrelA cylindrical container.
15.
ClosetA cupboard or wardrobe.
16.
Yellow mealCorn meal ground from dried maize.
17.
MillerA person who owns or operates a mill that grinds grain into flour.
18.
GroundReduced to fine particles by crushing or mincing.