Quarterly Update 17, Summer 2019
| Headword | Part of Speech | Update Type |
| arrow chase | n | Revised Entry |
| blowth | n | New Entry |
| chalk corners | n | New Entry |
| chalk the arrow | n | New Entry |
| chalk the rabbit | n | Revised Entry |
| char | v | New Entry |
| charter | v | Revised Entry |
| chartered | adj | Revised Senses, New Sense |
| chermany | n | Revised Entry |
| cherrybark oak | n | Revised Entry |
| chess cake | n | New Entry |
| chess pie | n | Revised Entry |
| chess tart | n | New Entry |
| chestnut sore | n | Revised Entry |
| jibble | n | New Entry |
| jibble | v | Revised Entry |