verb

1. To reduce in width or extent; to contract.

   “We need to narrow the search.”

2. To get narrower.

   “The road narrows.”

3. (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.”

Synonyms: taper

noun

1. The process of becoming narrow.

   “narrowings of the road”

2. The part of a stocking that is narrowed.