Definify.com
Webster 1913 Edition
Tisar
Ti′sar
,Noun.
 [F. 
tisard
.] (Glass Manuf.) 
The fireplace at the side of an annealing oven. 
Knight.
 Definition 2025
tisar
tisar
English
Noun
tisar (plural tisars)
-  The fireplace at the side of an annealing oven in glassmaking.
- (Can we find and add a quotation of Knight to this entry?)