noun

1. The buttocks.

2. The probability that a hypothesis is true (calculated by Bayes' theorem).

adjective

1. Located behind, or towards the rear of an object.

2. Following in order or in time.

3. Nearer the back end; nearer the caudal end of the body in quadrupeds or the dorsal end in bipeds.

Synonyms: back, hinder, rear, later