- lacrimal bone
- nounsmall fragile bone making up part of the front inner walls of each eye socket and providing room for the passage of the lacrimal ducts
* * *noun: a small thin bone making up part of the front inner wall of each orbit and giving passage to the lacrimal duct
* * *Anat.a small, thin, membrane bone forming the front part of the inner wall of each orbit. Also called lacrimal.[1850-55]
Useful english dictionary. 2012.