From en.wiktionary.org:
[Dobbin]
** English
*** Etymology
From [en], a common name given to workhorses.
*** Pronunciation
- [en] - [en] - [en] - [en]
*** Noun
[~]
1. An old jaded horse . 2. [en] Sea gravel mixed with sand. 3. [en] [en] [illegitimate study aid] < !--W1913-->
**** Translations
[old broken-down horse]
- Finnish: [fi] - French: [fr] - German: [de] , [de] , [de] - Polish: [pl] , [pl] - Russian: [ru] , [ru] - Spanish: [es] [Latin America] , [es] - Volapük: [male or female] [vo] [trans-bottom]
*** Further reading
- [R:Lexico] - [R:Etymonline] [en] [en]