All 11 Uses

function
in
Flags of Our Fathers
(Auto-generated)

And we'd go to church functions.†
Chpt 2.
But the CCC had a greater function—one that did not fully reveal itself until America went to war.†
Chpt 2. *
The central function of boot camp was to erase the impulses of individuality and get the recruits thinking as members of a team.†
Chpt 3.
It's not natural to think that death is imminent and to continue to function normally.†
Chpt 4.
As the senior Navy corpsman of Easy Company, Doc had functional connections with the other five flagraisers.†
Chpt 5.
Mike Strank functioned on many levels.†
Chpt 5. *
And with the transfer, Rene remained a functioning member of the company.†
Chpt 5.
The vast, specialized city of men—boys, really, but a functioning society of experts now, trained and coordinated and interdependent and ready for its mission—will move out upon the Pacific.†
Chpt 5.
By the fall of 1944 a veritable city of 22,000 was functioning below the surface of Iwo Jima.†
Chpt 6.
We were a functioning, interdependent unit.†
Chpt 14.
He would lead a normal life and then he would be invited to a parade, a function, and he would show up and be treated like a little god.†
Chpt 19.

Definitions:

(1) (function as in: Its main function is to...)
purpose, job, or natural activity
(2) (function as in: can't function well without sleep)
work or operate -- sometimes to work or operate normally or in a particular way
(3) (function as in: I'm attending a function tonight)
a social event or ceremony -- especially one attended for work or out of a sense of duty
(4) (function as in: oxygen is a function of altitude)
saying one results from another; or saying that the amount of one thing is dependent upon the value of another.

If x is a function of y, then x results from y; or the amount of x can be calculated based on the amount of y.
(5) (function as in: Amazon's new search function)
computer code that performs a specific task
(6) (function as in: a mathematical function)
a formula or mathematical expression that describes a relationship between variables
(7) (meaning too rare to warrant focus)
For more specialized meanings in math and chemistry, see a comprehensive dictionary.