There are multiple definitions:

1. Bayonet-Neill-Concelman(English)

   • a type of connector used in signal transmission
   • Bioengineering, Communication

2. bladder neck closure(English)

   • typically a “last resort” procedure in the end-stage bladder neck that is performed concomitantly with either suprapubic cystostomy or formal lower urinary tract reconstruction
   • BNR, ISD, AUS, CCC, CIC, SPC, SUI
   • Urology, Surgery
   • https://doi.org…ucl.2017.04.013

3. British National Corpus(English)

   • a 100 million word collection of samples of written and spoken language from a wide range of sources, designed to represent a wide cross-section of British English from the later part of the 20th century, both spoken and written. The latest edition is the BNC XML Edition, released in 2007
   • Communication, Data exchange
   • http://www.natc…x.ac.uk/corpus/