8. adj. Scrutinizing in detail; close; accurate; exact.
9. adj. (phonetics) Formed (as a vowel) by a close position of some part of the tongue in relation to the palate; or (according to Bell) by a tense condition of the pharynx; distinguished from wide.
10. v. To reduce in width or extent; to contract.
We need to narrow the search.
11. v. (intransitive) To get narrower.
The road narrows.
12. v. (of a person or eyes) To partially lower one's eyelids in a way usually taken to suggest a defensive, aggressive or penetrating look.
He stepped in front of me, narrowing his eyes to slits.
She wagged her finger in his face, and her eyes narrowed.
13. v. (knitting) To contract the size of, as a stocking, by taking two stitches into one.
14. subst. (chiefly in the plural) A narrow passage, especially a contracted part of a stream, lake, or sea; a strait connecting two bodies of water.