look up any word, like swoll:
 
1.
a spail is when you spell-fail. combining the words to become a creative and catchy insult.
SPAIL!!!
by dexyt July 04, 2011
 
2.
junk snail mail...the flyers, credit card offers, mortgage refinance offers, coupons you never asked for and political promotions.
Person 1: "Any good mail today?"

Person 2: "Nah, just some spail."
by PenelopeS September 11, 2006