Definition of "jerry"

We used chamber-pots a good deal – ‘jerries’ – cause of much hilarity doe to the hostilities.

1976, Angela Carter, “The Mother Lode”, in Shaking a Leg, Vintage, published 2013, page 3

If a man builds a jerry-house, he has a jerry conscience; and there are a lot of consciences of that description going about.

1889, Alfred Thomas Story, A book of vagrom men and vagrant thoughts, page 57