Canaliculus

A canaliculus is an anatomical term used to describe a small passageway.

Examples include:

Canaliculus (bone), a small channel found in ossified bone
Canaliculus (parietal cell), an adaptation found on gastric parietal cells
The lacrimal canaliculi, several small ducts in the eye
The dental canaliculi, the blood supply within a tooth

See also

Canal (anatomy)