extension tube

noun

, Photography.

1. any of a series of tubes of varying lengths placed between the lens and a camera body to facilitate closeup focusing.

Word History and Origins

Origin of extension tube¹

First recorded in 1955–60

Example Sentences

Attachments like pet cleaning heads, crevice tools, and extension tubes or hoses add versatility and help the vacuum work on varied surfaces.

From Popular-Science

Each hole has also an extension tube fitted into it, the whole effect being that of seven blowpipes.

From Project Gutenberg