noun, verb, planed, plan⋅ing.| 1. | Carpentry. any of various woodworking instruments for paring, truing, or smoothing, or for forming moldings, chamfers, rabbets, grooves, etc., by means of an inclined, adjustable blade moved along and against the piece being worked. |
| 2. | a trowellike tool for smoothing the surface of clay in a brick mold. |
| 3. | to smooth or dress with or as if with a plane or a planer. |
| 4. | to remove by or as if by means of a plane (usually fol. by away or off). |
| 5. | to work with a plane. |
| 6. | to function as a plane. |

plane 1 (plān)
n.
A surface containing all the straight lines that connect any two points on it.
A flat or level surface.
An imaginary surface formed by extension through any axis of the body or through two definite points on the body.
| plane (plān) Pronunciation Key
Noun A two-dimensional surface, any two of whose points can be joined by a straight line that lies entirely in the surface. Adjective Lying in a plane: a plane curve. |