Answer:

lehrs

Answer	Crossword Clue
LEHRS	Glassware ovens
LEHRS	Annealing ovens
LEHRS	Annealing ovens.

LEHRS	Glass ovens.
LEHRS	Comedian Lew et al.
LEHRS	Glass ovens
LEHRS	Glassmakers' ovens
LEHRS	Ovens for glassmakers

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.