Nautical Mile.
A unit of length used in navigation; exactly 1,852 meters; historically based on the distance spanned by one minute of arc in latitude.

1 NM = 1.15078 MI
Pilot 1:How much further until our waypoint?
Pilot 2:About 16 nm
by green-poo January 1, 2010
Get the nm mug.
in the subject line of an e-mail, (nm) stands for no message. that is, the sender is so to the point that he needed only the subject line to express himself, so there's no need for the reader to open the (blank) message.
Subejct: Your house is on fire. Run for cover. (nm)
by Zen06 June 19, 2005
Get the nm mug.
This is one of the many annoying "chatspeaks" that illiterate dumbasses use because they can't take the time to write it out.

If not much is going on, can't you take time out of your boring life to type "not much"?
Bob:So, whats up?
Bill: nm
Tiek: Can't you take the time to type out "not much"?
by Tiek October 31, 2004
Get the nm mug.
Quite possibly the most annoying "Word" knows to the "English speaking nation." shortened, or "1137" way of saying "Not Much."
Its just that our time has gotten to lazy to type nothing much, which is stupid because if your not doing anything you should be able to type "Nothing much".
me;Whats Up?
Me;Why don't you just type nothing much you loser.
by Samanthaa* August 28, 2007
Get the nm mug.
A: Did you bring the car?
B: er...
A: nm.
by timothykhoo September 17, 2004
Get the nm mug.