All 7 Uses of

mock
in
The House of the Seven Gables

II The Little Shop-Window IT still lacked half an hour of sunrise, when Miss Hepzibah Pyncheon—we will not say awoke, it being doubtful whether the poor lady had so much as closed her eyes during the brief night of midsummer—but, at all events, arose from her solitary pillow, and began what it would be mockery to term the adornment of her person.†
Chpt 2

mockery = something that is ridiculous

They could not flee; their jailer had but left the door ajar in mockery, and stood behind it to watch them stealing out.†
Chpt 11

Upon this, the two meanly dressed figures mocked and jeered at the much-abashed old dignitary, and pointed their fingers at the stain.†
Chpt 13 *

mocked = made fun of

Their vivid and wild expression seemed likewise sufficient to illuminate them; it was an expression of scorn and mockery, coinciding with the emotions indicated by his gesture.†
Chpt 16

mockery = something that is ridiculous

The pitiable mockery of it, which the world might have been ready enough to offer, coming so long after the agony had done its utmost work, would have been fit only to provoke bitterer laughter than poor Clifford was ever capable of.†
Chpt 21

Is not the world sad enough, in genuine earnest, without making a pastime of mock sorrows?†
Chpt 10 *

In a corner, meanwhile, stands the figure of an elderly man, in a leathern jerkin and breeches, with a carpenter's rule sticking out of his side pocket; he points his finger at the bearded Colonel and his descendants, nodding, jeering, mocking, and finally bursting into obstreperous, though inaudible laughter.†
Chpt 18

Definitions:

(1) (mock as in: don't mock me)
make fun of (ridicule--sometimes by imitating in an exaggerated manner)

or (more rarely): just to make fun or to be ridiculous without targeting anyone as a victim

These senses of mockery come together when a comedian pokes fun at a politician by pretending to be the politician and saying ridiculous things.
(2) (mock as in: a mock trial)
not real
(3) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Less commonly, mock can refer to a way of preparing food. Mockers can be an abbreviation for mockingbirds.