Definition of overstringing in US English:

overstringing

noun

  • In the construction of pianos and similar keyboard instruments: an arrangement of strings at two (rarely, three) levels, the bass strings passing obliquely over the others, so as to make more effective use of available space.

Origin

Mid 19th century; earliest use found in Scientific American. From over- + stringing. Compare later overstring.

Pronunciation

overstringing

/ˈəʊvəˌstrɪŋɪŋ/