Lehr

[glassmaking] A lehr is a temperature-controlled kiln for annealing objects made of glass. The name derives from the German verb lehren meaning to teach and is cognate with the English lere also meaning to learn or acquire knowledge of (something). Rapid cooling of molten glass generates an uneven temperature distribution in the body of the...
Found on http://en.wikipedia.org/wiki/Lehr_(glassmaking)

Lehr

demonstration; usually part of the name of an elite formation used as or mobilized from instructional troops (e.g., Panzer-Lehr-Division).
Found on http://en.wikipedia.org/wiki/Glossary_of_German_military_terms

Lehr

demonstration; usually part of the name of an elite formation used as or mobilized from instructional troops (e.g., Panzer Lehr).
Found on http://www.translationdirectory.com/glossaries/glossary261.php

Lehr

Oven used for annealing
Found on http://www.great-glass.co.uk/glass%20notes/glossa-e.htm
No exact match found