How do you spell Maintenance

Available Definitions:
1)  n. - The act of maintaining; sustenance; support; defense; vindication.
2)  n. - That which maintains or supports; means of sustenance; supply of necessaries and conveniences.
3)  n. - An officious or unlawful intermeddling in a cause depending between others, by assisting either party with money or means to carry it on. See Champerty .