Norwegian word for scout, or tracker.
Also, modern slang for hunter of opposite sex, and nickname for persons percieved as 'hunting big game' e.g. having a larger number ofsexual partners than what is regurarly percieved as normal.
Also used for persons with percieved large 'hunting spear'
Major: "General, I believe the enemy has a Speider in the woods, surveying us!"
Guy 1: That dude has different women leaving his home every morning.
Guy 2: Yeah. He's Speider.