Scottish National Dictionary (1700–)
BRIN, n.1 “A brook or rivulet, one in Unst called “Yellia Brin” (Sh. 1866 Edm. Gl.).
Hence brinny water, brinna water, “the water that is poured on ‘sowans' — to keep it fresh; of course this was clean drinking water” (Ork. 1929 Marw.). Cf. use of burn water in ne.Sc. in brewing, see Burn, n., 2.[O.N. brunnr, a spring, a well (cf. Ger. brunnen, idem), through a mutated form seen in brynna, to water (cattle).]
You may wish to vary the format shown below depending on the citation style used.
"Brin n.1". Dictionary of the Scots Language. 2004. Scottish Language Dictionaries Ltd. Accessed 26 May 2018 <http://www.dsl.ac.uk/entry/snd/brin_n1>
Try an Advanced Search