All 6 Uses of

mock

in

The Bell Jar

The gray rock mocked me, bobbing on the water easy as a lifebuoy.†
Chpt 13

mocked = made fun of

A great wallowing bush of mock orange shut off the view of the street in front, the house wall and the garage wall took care of either side, and a clump of birches and a box hedge protected me from Mrs. Ockenden at the back.†
Chpt 10

From another, distanced mind, I saw myself sitting on the breezeway, surrounded by two white clapboard walls, a mock orange bush and a clump of birches and a box hedge, small as a doll in a doll's house.†
Chpt 10

But the minute my mother turned round to me again, Mrs. Tomolillo matched the tips of her fingers together the way my mother had just done and cast a black, mocking look at me.†
Chpt 14

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