Ambiguity in "The Chaser"

In the short story, The Chaser the author uses the literary device ambiguity to make the plot more appealing. One example of ambiguity is the title of the novel, The Chaser. The Chaser is ambiguous because chaser means to drink a type of hard liquor and wash it down with beer. But the title also signifies the old mans hunt for Alan to buy his potions. The chaser is a perfect example of ambiguity because it has more than one meaning.