The Collaborative International Dictionary
Renning
Renning \Ren"ning\ (r?n"n?ng), n. See 2d Rennet. [Obs.]
Asses' milk is holden for to be thickest, and therefore
they use it instead of renning, to turn milk.
--Holland.
Wiktionary
renning
n. (context obsolete English) rennet
Usage examples of "renning".
The sun was setting right behind the Renning smokestack, which looked like a black matchstick in front of an orange lightbulb.