Definition from Wiktionary, the free dictionary
Probably a dialectal form of shame.
- Rhymes: -æm
- Intended to deceive; false.
- It was only a sham wedding: they didn't care much for one another but wanted their parents to stop hassling them.
- counterfeit; unreal
- They scorned the sham independence proffered to them by the Athenians.
intended to deceive
sham (plural shams)
- A fake; an imitation that purports to be genuine.
- The time-share deal was a sham.
- Trickery, hoaxing.
- A con-man must be skilled in the arts of sham and deceit.
- A decorative cover for a pillow.
Derived terms 
See also 
- To deceive, cheat, lie.
- You were shammed by the pool shark.
to cheat or deceive
- sham in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
- sham in The Century Dictionary, The Century Co., New York, 1911
- sham at OneLook Dictionary Search
sham (plural shamlar)