All 9 Uses of

parliament
in
David Copperfield

I remember a certain luscious roll he gave to such phrases as 'The people's representatives in Parliament assembled,' 'Your petitioners therefore humbly approach your honourable house,' 'His gracious Majesty's unfortunate subjects,' as if the words were something real in his mouth, and delicious to taste; Mr. Micawber, meanwhile, listening with a little of an author's vanity, and contemplating (not severely) the spikes on the opposite wall.†
Chpt 10-12 *

parliament = legislative assembly that passes laws (existing in some countries)

Upon my life, "the whole social system" (as the men call it when they make speeches in Parliament) is a system of Prince's nails!' said this least of women, trying to fold her short arms, and nodding her large head.†
Chpt 22-24

It's a little out-of-the-way place, where they administer what is called ecclesiastical law, and play all kinds of tricks with obsolete old monsters of acts of Parliament, which three-fourths of the world know nothing about, and the other fourth supposes to have been dug up, in a fossil state, in the days of the Edwards.†
Chpt 22-24

The first subject on which I had to consult Traddles was this, — I had heard that many men distinguished in various pursuits had begun life by reporting the debates in Parliament.†
Chpt 34-36

Very grateful for this friendly aid, I accepted the proposal; and night after night, almost every night, for a long time, we had a sort of Private Parliament in Buckingham Street, after I came home from the Doctor's.†
Chpt 37-39

I am in high repute for my accomplishment in all pertaining to the art, and am joined with eleven others in reporting the debates in Parliament for a Morning Newspaper.†
Chpt 43-45

' He read this passage as if it were from an Act of Parliament; and appeared majestically refreshed by the sound of the words.†
Chpt 52-54

'With respect to the pecuniary assistance enabling us to launch our frail canoe on the ocean of enterprise, I have reconsidered that important business-point; and would beg to propose my notes of hand — drawn, it is needless to stipulate, on stamps of the amounts respectively required by the various Acts of Parliament applying to such securities — at eighteen, twenty-four, and thirty months.†
Chpt 52-54

Definitions:

(1) (parliament with a lowercase "p")
a legislative assembly in certain countries (that can pass laws)
(2) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

As a proper noun, you need to look at the context to determine the parliament to which Parliament is referring. For example, it could be the British Parliament, the European Union Parliament, the French Parliament, etc.