canaliculus
noun
can·a·lic·u·lus ˌka-nə-ˈli-kyə-ləs 
plural canaliculi ˌka-nə-ˈli-kyə-ˌlī
-ˌlē
: a minute canal in a bodily structure
canalicular
ˌka-nə-ˈli-kyə-lər
adjective 
Word History
Etymology
Latin, diminutive of canalis
First Known Use
1661, in the meaning defined above
Medical Definition
canaliculus
noun
can·a·lic·u·lus -yə-ləs
plural canaliculi -ˌlī, -ˌlē
: a minute canal in a bodily structure: as
a
: one of the hairlike channels ramifying a haversian system in bone and linking the lacunae with one another and with the haversian canal
b
: one of the narrow spaces between cells in the anastomosing cords of cells that make up a liver lobule