| the offspring of a zebra and a donkey. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| working day or esp (US) workday | |
| —n | |
| 1. | a day on which work is done, esp for an agreed or stipulated number of hours in return for a salary or wage |
| 2. | the part of the day allocated to work: a seven-hour working day |
| 3. | (often plural) commerce any day of the week except Sunday, public holidays, and, in some cases, Saturday |
| workday or esp (US) workday | |
| —n | |