the inner or back room of a two-room cottage, esp. when used as a combined parlor and bedroom.
–adverb, preposition
2.
within; inside.
–adjective
3.
inside; inner.
Origin: 1400–50; late ME (Scots); as adv., unexplained var. of late ME bin, ME binne, OE binnan (c. OFris binna, MD, G binnen), equiv. to bi-be-+ innan within (cf. in)
"mountain peak" in Celtic place names (esp. of roughly pyramidal peaks standing alone), from Gael. beann, from O.Ir. *benno- "peak, horn, conical point," from PIE base *bend- "projecting point."
[ben] 
Scot.