Nouns

(n)narrowa narrow strait connecting two bodies of water

Verbs

(v)narrow, contractmake or become more narrow or restricted“The selection was narrowed”, “The road narrowed”
(v)pin down, peg down, nail down, narrow down, narrow, specifydefine clearly“I cannot narrow down the rules for this game”
(v)specialize, specialise, narrow, narrow downbecome more focused on an area of activity or field of study“She specializes in Near Eastern history”
(v)constrict, constringe, narrowbecome tight or as if tight“Her throat constricted”

Adjectives

(a)narrownot wide“a narrow bridge”, “a narrow line across the page”
(s)narrowlimited in extent or scope“the narrow sense of a word”
(a)narrow-minded, narrowlacking tolerance or flexibility or breadth of view“a brilliant but narrow-minded judge”, “narrow opinions”
(a)narrowvery limited in degree“won by a narrow margin”, “a narrow escape”
(s)minute, narrowcharacterized by painstaking care and detailed examination“a minute inspection of the grounds”, “a narrow scrutiny”, “an exact and minute report”