conditioner

noun

Etymology: Etymology tree English condition Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English conditioner From condition + -er.

1. Anything that improves the condition of something.
2. Hair conditioner.
3. Fabric conditioner, fabric softener.
4. Someone who trains athletes or racehorses.
5. An agricultural machine that crimps and crushes newly cut hay to promote faster and more even drying.