Green’s Dictionary of Slang

swag v.

[swag n.1 (3)]

1. [mid-19C+] to steal, to take forcibly.

2. (Aus.) to carry a pack, i.e. a swag n.1 (7)

3. [mid-19C+] (also swagg) to place, to put, to carry; thus swagging n.

4. [1930s+] to hustle along, to hurry.

5. to grab up (but not in criminal sense).

6. [1950s+] to smuggle.

7. [1980s] (UK Und.) to sell stolen property.

8. [2010s] (UK/US black) to look good.

In phrases

swag away (v.)

[1950s+] to abduct, to kidnap; thus in fig. use.

swag it (v.)

1. [mid-19C–1910s] (Aus.) to live as a tramp, or itinerant worker.

2. in weak use of sense 1, to travel.