n. Causing fertilised eggs to lose viability, by killing the developing embryo within through shaking, piercing, freezing or oiling, without breaking the shell.
v. Present participle of addle.
The Century Dictionary and Cyclopedia
n. Decomposition of an egg.
n. Muddling of the wits.
n. The act of earning by labor.
n. plural That which is earned; earnings. Also written adlings.
Word Usage
"In April, volunteers also identified nests and coated recently laid eggs with oil, a process called addling that halts the egg's development."