noun, adjective, verb, spec'd or specked or specced, spec'⋅ing or speck⋅ing or spec⋅cing.| 3. | built, done, bought, etc., as a speculation: the construction of spec houses. |
| 4. | to provide specifications for: Their newest truck was spec'd by a computer. |
| 5. | on spec, made, built, or done with hopes of but no assurance of payment or a sale; without commitment by a client or buyer: ad illustrations done on spec; luxury homes built on spec and sold before completion. |

,| 1. | a small spot differing in color or substance from that of the surface or material upon which it appears or lies: Specks of soot on the window sill. |
| 2. | a very little bit or particle: We haven't a speck of sugar. |
| 3. | something appearing small by comparison or by reason of distance: By then the town was just a speck. |
| 4. | to mark with, or as with, a speck or specks. |