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Webster 1913 Edition

Noun.

[AS.

nearunes

The condition or quality of being narrow.

Noun.

Smallness of breadth or distance from side to side; as the narrowness of cloth, of a street or highway, of a stream or sea.

Smallness of extent; contractedness; as the narrowness of capacity or comprehension; narrowness of knowledge or attainments.

Smallness of estate or means of living; poverty; as the narrowness of fortune or of circumstances.

Contractedness; penuriousness; covetousness; as narrowness of heart.

Illiberality; want of generous, enlarged or charitable views or sentiments; as narrowness of mind or views.

narrowness ‎(countable and uncountable, plural narrownesses)

- 1749, John Cleland, Fanny Hill: Memoirs of a Woman of Pleasure, Part 3
  presently, then, I felt the stiff insertion between the yielding, divided lips of the wound, now open for life; where the narrowness no longer put me to intolerable pain, and afforded my lover no more difficulty than what heighten'd his pleasure, in the strict embrace of that tender, warm sheath, round the instrument it was so delicately adjusted to
(countable) a constriction

state of being narrow