nidan verb (lower class) with 'mu' ending (archaic)
to narrow; to reduce; to contract
Archaic Nidan verb (lower class, mu-ending). In modern Japanese, this meaning is expressed by 狭める (せばめる). Found only in classical texts.
See also: 狭める (せばめる)
狭む is a verb in classical Japanese meaning 'to make narrow'.
Classical Japanese verb; the exact derivation is uncertain, but it is related to the modern 狭める (せばめる).