| 1. | to cause pain, uneasiness, or trouble to. |
| 2. | to be unwell; feel pain; be ill: He's been ailing for some time. |

ail (āl) v. ailed, ail·ing, ails v. intr. To feel ill or have pain. v. tr. To cause physical or mental pain or uneasiness to; trouble. See Synonyms at trouble. [Middle English eilen, from Old English eglian, from egle, troublesome.] |