ail

n. Indisposition or morbid affection. Pope. [ 1913 Webster ]

v. i. To be affected with pain or uneasiness of any sort; to be ill or indisposed or in trouble. [ 1913 Webster ]

When he ails ever so little . . . he is so peevish. Richardson. [ 1913 Webster ]

n. Same as Ailantus. [ 1913 Webster ]

n. [ From aylanto, i. e., tree of heaven, the name of the tree in the Moluccas. ] (Bot.) A genus of beautiful trees, natives of the East Indies. The tree imperfectly diœcious, and the staminate or male plant is very offensive when blossom. [ 1913 Webster ]

n. [ F., dim. of aile wing. ] 1. A half gable, as at the end of a penthouse or of the aisle of a church. [ Webster 1913 Suppl. ]

2. (Aëronautics) A small plane or surface capable of being manipulated by the pilot of a flying machine to control lateral balance; a hinged wing tip; a lateral stabilizing or balancing plane. [ Webster 1913 Suppl. ]

n. [ F. ailette, dim. of aile wing, L. ala. ] A small square shield, formerly worn on the shoulders of knights, -- being the prototype of the modern epaulet. Fairholt. [ 1913 Webster ]

adj. sick; unhealthy. Opposite of well or healthy.
Syn. -- indisposed, peaked(predicate), poorly(predicate), sickly, unwell. [ WordNet 1.5 ]

n. Indisposition; morbid affection of the body; -- not applied ordinarily to acute diseases. “Little ailments.” Landsdowne. [ 1913 Webster ]