send to the glue factory

English

Etymology

Glue was traditionally made by boiling down horses' hooves.

Verb

send to the glue factory (third-person singular simple present sends to the glue factory, present participle sending to the glue factory, simple past and past participle sent to the glue factory)

1. (euphemistic) To kill, usually a horse.

   Synonyms: put down, put to sleep

2. (of a person, humorous) To retire or remove from prominence, usually due to obsolescence, old age or injury.

   Synonym: put out to pasture