This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A very small tube or tubular structure.

n. A small pipe or fistular body; a little tube.

n. A small pipe or fistular body; a little tube.

n. A minute tube lined with glandular epithelium.

n. A small tube or pipe: as, the uriniferous or seminiferous tubules. See tubulus, and cut under Malpighian.

n. a small tube

"The third segment of the tubule is the distal convoluted tubule, which is again found in the cortex."

tube    tube-shaped structure   

convoluted tubule    respiratory tubule    miescher's tubules   

seminiferous tubule    microtubule    trachea    uriniferous tubule    vasa efferentia    uveoscleral pathway    nephron   

microtubule   

tubules    anastomosis    jejunum    pedicle    phalange    nephron    duodenum    tibia    oncocytoma    perfusion