What do we mean when we use the word, 'liturgy'?

It is easy to use a word without an agreed understanding of what we mean when we use it. I think that is possible with this word, liturgy.

Here are a few thoughts to consider:

fr. http://en.wikipedia.org/wiki/Liturgy

As a religious phenomenon, liturgy is a communal response to the sacred through activity reflecting praise, thanksgiving, supplication, or repentance.
[...]
The word comes from the Classical Greek word λειτουργία (leitourgia) meaning "public work". In the Greek city-states, it had a different sense: some public good which a wealthy citizen arranged at his own expense, either voluntarily or by law.
[...]
Not infrequently in Christianity, a distinction is made between "liturgical" and "non-liturgical" churches based on the elaboration and/or antiquity of the worship, but this obscures the universality of public worship as a religious phenomenon. Thus, even the open or waiting worship of Quakers is liturgical, since the waiting itself until the spirit moves individuals to speak is a prescribed form of Quaker worship, sometimes referred to as "the liturgy of silence." Typically in Christianity, however, the term "the liturgy" normally refers to a standardized order of events observed during a religious service, be it a sacramental service or a service of public prayer.

From Mark Galli in Beyond Smells and Bells:

When I refer to "the liturgy" in this book, I am referring to the public Sunday service performed by liturgical and mainline churches. I refer to it in the singular because the shape of the service is remarkably similar in all these traditions (see Appendix B). p. 14

What do you think of when you hear the word, liturgy?