lehr

[leer, lair] /lɪər, lɛər/
noun
1.
an oven used to anneal glass.
Also, leer.
Origin
1905-10; < German Lehr, Leer model
British Dictionary definitions for lehr

lehr

/lɪə/
noun
1.
a long tunnel-shaped oven used for annealing glass
Word Origin
from German: pattern, model