"narrows" in the noun sense
1. narrow
a narrow strait connecting two bodies of water
"narrows" in the verb sense
1. narrow, contract
make or become more narrow or restricted
"The selection was narrowed"
"The road narrowed"
2. pin down, peg down, nail down, narrow down, narrow, specify
define clearly
"I cannot narrow down the rules for this game"
3. specialize, specialise, narrow, narrow down
become more focused on an area of activity or field of study
"She specializes in Near Eastern history"
4. constrict, constringe, narrow
become tight or as if tight
"Her throat constricted"
Source: WordNet® (An amazing lexical database of English)
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