A "wooden stretcher" is a wooden frame used to carry someone who is injured or unconscious. It is used by medical professionals to move the person safely without causing further harm or discomfort. Full definition
Ink, acrylic paint, etchings on satin fabric stretched on wooden stretcher bars. (1stdibs.com)
Seth Adelsberger, also a painter, reimagines the functional properties of wooden stretcher bars in compositions that reference the legacy of geometric abstraction. (heinercontemporary.com)
Stretched and draped over exposed wooden stretchers, the cloth alternately reveals and disguises the framework. (wavehill.org)