The act of nourishing or nursing; tender care
That which nourishes; food; diet.
The environmental influences that contribute to the development of an individual (as opposed to "nature").
To nourish or nurse.
To encourage, especially the growth or development of something.
Maintenance; the act or effort of keeping something in good and working condition.
Do you know how to upkeep a boat?
To maintain (something) or keep it in good repair.