·noun Indisposition or morbid affection.
II. Ail ·vi To be affected with pain or uneasiness of any sort; to be ill or indisposed or in trouble.
III. Ail ·vt To affect with pain or uneasiness, either physical or mental; to Trouble; to be the matter with;
— used to express some uneasiness or affection, whose cause is unknown; as, what ails the man? I know not what ails him.