1 stable-boy, stableman, Brit stable-lad, Archaic ostler or hostler, equerry:
The groom unsaddled the horses and began to curry them.
Let's drink to the bride and groom!
3 spruce up, dress, tidy or neaten up, smarten up, titivate or tittivate, preen, primp, refresh:
Every time she passes a mirror Vivian stops to groom herself.
4 fit, train, prepare, coach, tutor, brief, drill, prime, (get or make) ready, adapt, shape:
McCusker is being groomed for a directorship.