Pronunciation: (ub-tOOs', -tyOOs'), [key]
1. not quick or alert in perception, feeling, or intellect; not sensitive or observant; dull.
2. not sharp, acute, or pointed; blunt in form.
3. (of a leaf, petal, etc.) rounded at the extremity.
4. indistinctly felt or perceived, as pain or sound.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.