|—n , pl -nae, -nas|
|1.||a gap or space, esp in a book or manuscript|
|2.||biology a cavity or depression, such as any of the spaces in the matrix of bone|
|3.||another name for coffer|
|[C17: from Latin lacūna pool, cavity, from lacus lake]|
|the colored portion of the eye that contains a circular opening, the pupil, in its center|
|the tendon joining the calf muscles to the heel bone|
lacuna la·cu·na (lə-ky&oomacr;'nə)
n. pl. la·cu·nas or la·cu·nae (-nē)
An anatomical cavity, space, or depression, especially in a bone.
An empty space or a missing part; a gap; a defect.
An abnormal space between the strata or between the cellular elements of the epidermis.
See corneal space.