No - half a pair is 0.5 pair
Half a pair of winter boots is 1 boot because: 1 pair= 2 boots so 1 boot= half a pair
In you ladder analogy it would be the rungs. About half is each rung is one base (the other half being is pair obviously)
A half-done job.
Yes. Half from the father, half from the mother.
The missing half of the word pair is "order" - together they form the term "law and order."
foot
soul
cover
feather
dandy
proper