All 11 Uses of

mock
in
The Scarlet Letter

It was as if an evil spirit possessed the child, and had just then peeped forth in mockery.†
p. 90.7

mockery = something that is ridiculous

Now it was a herd of diabolic shapes, that grinned and mocked at the pale minister, and beckoned him away with them; now a group of shining angels, who flew upward heavily, as sorrow-laden, but grew more ethereal as they rose.†
p. 134.7

mocked = made fun of

Was it but the mockery of penitence?†
p. 136.9

mockery = something that is ridiculous

A mockery at which angels blushed and wept, while fiends rejoiced with jeering laughter!†
p. 137.0

How dreary looked the forest-track that led backward to the settlement, where Hester Prynne must take up again the burden of her ignominy and the minister the hollow mockery of his good name!†
p. 182.4

On the other hand, a penalty which, in our days, would infer a degree of mocking infamy and ridicule, might then be invested with almost as stern a dignity as the punishment of death itself.†
p. 48.1 *

She seemed rather an airy sprite, which, after playing its fantastic sports for a little while upon the cottage floor, would flit away with a mocking smile.†
p. 86.3

Else, I should long ago have thrown off these garments of mock holiness, and have shown myself to mankind as they will see me at the judgment-seat.†
p. 178.8 *

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.