somebody who is in charge of the feeding, care, and stabling of horses

a bridegroom

archaic a manservant

to clean and care for (e.g. a horse or dog), esp by brushing its coat

to make (oneself or one's clothes or appearance) neat or attractive

an impeccably groomed woman

to get (somebody) ready for a specific role or task, e.g. by training

said of a paedophile: to develop a friendship with (a child), esp in an Internet chat room, in order to entice them into a sexual relationship

to groom oneself