A partial merger of two different, but related and probably synonymous words:

• rint from Old Dutch *rind, from Proto-Germanic *hrinþaz
• runt from Old Dutch *rund, from Proto-Germanic *hrunþaz

In the coastal dialects, unrounding of runt also resulted in rint.

rint n

1. cow, bovine

• rent
• runt

• Dutch: rund
• Limburgish: röndj

• “rint”, in Vroegmiddelnederlands Woordenboek, 2000
• Verwijs, E.; Verdam, J. (1885–1929), “rint”, in Middelnederlandsch Woordenboek, The Hague: Martinus Nijhoff, →ISBN
• Verwijs, E.; Verdam, J. (1885–1929), “runt (I)”, in Middelnederlandsch Woordenboek, The Hague: Martinus Nijhoff, →ISBN, page runt

rint

1. third-person singular present of rinne