thistle tube

American  

noun

1. a glass funnel consisting of a long narrow tube with a thistle-shaped head.

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Etymology

Origin of thistle tube

First recorded in 1890–95

Example Sentences

"To prepare hydrogen gas, pass a thistle tube and a delivery tube through a cork which fit tightly in the neck of a bottle," etc., is simple enough.

From Project Gutenberg

The generation of H must not be too rapid, neither should the t.t. be held under the face, as the cork is liable to be forced out by the pressure of H. A safety-tube, similar to the thistle- tube above, will prevent this.

From Project Gutenberg