| the offspring of a zebra and a donkey. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
extinguish ex·tin·guish (ĭk-stĭng'gwĭsh)
n. ex·tin·guished, ex·tin·guish·ing, ex·tin·guish·es
To bring about the extinction of a conditioned response.