• Chambers's Twentieth Century Dictionary
    • adj Heater-shaped triangular, like the common heater
    • ***


In literature:

The shield is of the heater or triangular shape.
"The Journal of Sir Walter Scott" by Walter Scott
The wedge-shaped edge of one of the forms of bit shown in the sketch is filed to shape and the bit heated in a fire or on a gas heater.
"On Laboratory Arts" by Richard Threlfall