n.
1.a fundamental principle or practice
2.anything tall and thin approximating the shape of a column or tower
3.a prominent supporter
4.a vertical structure standing alone and not supporting anything (as a monument or a column of air)
5.(architeture) a tall cylindrical vertical upright and used to support a structure
Idiom of the Day
make a practice of (something)
to turn something into a habit
I make a practice of going to bed at 11:00 PM every evening.