addle

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To muddle; confuse: "My brain is a bit addled by whiskey” ( Eugene O'Neill). See Synonyms at confuse.
2. v. To become confused.
3. v. To become rotten, as an egg.

Century Dictionary and Cyclopedia

1. n. Liquid filth; putrid urine or mire; the drainage from a dunghill.
2. n. The dry lees of wine. Bailey; Ash.
3. n. Same as attle.
4. Having lost the power of development and become rotten; putrid: applied to eggs. Hence Empty; idle; vain; barren; producing nothing; muddled, confused, as the head or brain.
5. To make corrupt or putrid, as eggs.
6. Hence To spoil; make worthless or ineffective; muddle; confuse: as, to addle the brain, or a piece of work.
7. To manure with liquid.
8. To become addled, as an egg; hence, to come to nought; be spoiled.
9. To earn; accumulate gradually, as money.
10. To produce or yield fruit; ripen.
11. n. Laborers' wages.

Wiktionary

1. v. provincial, Northern England To earn, earn by labor; earn money or one's living. — Forby.
2. v. provincial, Northern England To thrive or grow; to ripen.
3. adj. Having lost the power of development, and become rotten, as eggs; putrid.
4. adj. by extension Unfruitful or confused, as brains; muddled. John Dryden.
5. adj. See addled.
6. n. obsolete Liquid filth; mire.
7. n. provincial Lees; dregs. Wright
8. v. To make addle; to grow addle; to muddle; as, he addled his brain.
9. v. To cause fertilised eggs to lose viability, by killing the developing embryo within through shaking, piercing, freezing or oiling, without breaking the shell.

GNU Webster's 1913

1. n. obsolete Liquid filth; mire.
2. n. Prov. Eng. Lees; dregs.
3. adj. Having lost the power of development, and become rotten, as eggs; putrid. Hence: Unfruitful or confused, as brains; muddled.
4. v. To make addle; to grow addle; to muddle.
5. v. Prov. Eng. To earn by labor.
6. v. Prov. Eng. To thrive or grow; to ripen.

WordNet 3.0

1. v. mix up or confuse
2. v. become rotten