[span-druh
l] 
| 1. | Architecture. an area between the extradoses of two adjoining arches, or between the extrados of an arch and a perpendicular through the extrados at the springing line. |
| 2. | (in a steel-framed building) a panellike area between the head of a window on one level and the sill of a window immediately above. |
| 3. | Philately. the decoration occupying the space at the corner of a stamp between the border and an oval or circular central design. |
span·drel also span·dril (spān'drəl)  (click for larger image in new window) n.
[Middle English spaundrell, probably from spandre, space between supporting timbers, from Anglo-Norman spaundre, from spandre, to spread out, from Latin expandere; see expand.] |