Theory:

Meanings of difficult words from the poem "The Shed":
 
S.No
Words
Meanings
1
ShedA simple roofed structure used for garden storage, to shelter animals, or as a workshop
2
HingeA piece of metal that fastens the edge of a door, window, lid, etc. to something else and allows it to open or close
3
Rusty To be affected by a brown substance that forms on iron or steel when it comes into contact with water (rust) 
4
Creak A small sound made by a door when it opens or shuts, or by a wooden floor when you step on it    
5
DustyTo be covered with a fine powder of dirt or sand
6
CrackedDamaged with lines in its surface but not completely broken
7
Panes Sheets of glass in a window or door
8
Peep To look secretly at something, especially through a small opening
9
RottenSomething that has decayed and cannot be used
10
FloorboardA long flat piece of wood in a wooden floor
11
Dare Have the courage to do something
12
Chop Cut something into pieces, often with repeated sharp blows of an axe or knife
13
Peek To look secretly and swiftly (very quickly) 
14
DenA room or secret place where a person can go to relax or be private