(e) Excellent lubricant characteristics.

CMC is used as a lubricant in artificial tears.

In 1950, Ugine Séjournet, of France, invented a process which uses glass as a lubricant for extruding steel.

Coffee culture describes a social atmosphere or series of associated social behaviors that depends heavily upon coffee, particularly as a social lubricant.

And it's the first I had just gotten these new sprinting legs that you see in that bio, and I didn't realize at that time that the amount of sweating I would be doing in the sock it actually acted like a lubricant and I'd be, kind of, pistoning in the socket.