Objects moving along a line have momentum.  Do spinning objects have momentum?
YES!
If you grab a spinning top, you can feel that it wants to keep spinning.
How would this "angular momentum" be measured?

Recall that linear momentum is m*v, to yield Kg*m/s.
Recall that to account for different distributions of mass in rotating objects, the moment of inertia, or "I" was used.

Angular momentum is given by L =  Iw.and its unit is Kgm2/s.
How much angular momentum does a 1Kg disc have if spinning at 2r/s? Radius is .1m.
L = .5mr2w = (.5)(1)(.12)(2) = .01 Kgm2/s