conditioner
nounUK /kənˈdɪʃənə/ · CA, US /kənˈdɪʃənɚ/
Etymology 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.