| the offspring of a zebra and a donkey. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
expression ex·pres·sion (ĭk-sprěsh'ən)
n.
The act of pressing or squeezing out.
The outward manifestation of a mood or disposition by mobility of the facial features; facies.
The phenotype manifested by a genotype under fixed environmental conditions.