from The American Heritage® Dictionary of the English Language, 4th Edition
- interj. Used to express various emotions, such as satisfaction, surprise, delight, dislike, or pain.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- interj. An expression of relief, relaxation, comfort, confusion, understanding, wonder, awe, et cetera according to uttered inflection.
- interj. A word used for drama or emphasis.
- interj. A syllable used to fill space, particularly in music.
- n. An instance of the interjection ah.
- pro. Eye dialect spelling of I., most often indicating that the speaker is using an American (particularly Southern) accent.
from the GNU version of the Collaborative International Dictionary of English
- interj. An exclamation, expressive of surprise, pity, complaint, entreaty, contempt, threatening, delight, triumph, etc., according to the manner of utterance.
from The Century Dictionary and Cyclopedia
- An exclamation expressive of pain, surprise, pity, compassion, complaint, contempt, dislike, joy, exultation, etc., according to the manner of utterance.
mid-1400s Old Frankish (replacing English la) (Wiktionary)