Buddha

[boo-duh, boo d-uh] /ˈbu də, ˈbʊd ə/
noun
1.
Also called Butsu, Gautama, Gautama Buddha. (Prince Siddhāttha or Siddhartha) 566?–c480 b.c, Indian religious leader: founder of Buddhism.
2.
any of a series of teachers in Buddhism, of whom Gautama was the last, who bring enlightenment and wisdom.
3.
(sometimes lowercase) Buddhism. a person who has attained full prajna, or enlightenment; Arhat.
Origin
1675-85; < Sanskrit: awakened (budh- awaken, notice, understand + -ta past participle suffix)
British Dictionary definitions for Buddha

buddha

/ˈbʊdə/
noun
1.
(Buddhism) (often capital) a person who has achieved a state of perfect enlightenment
2.
an image or picture of the Buddha
Word Origin
C17: from Sanskrit: awakened, enlightened, from budh to awake, know

Buddha

/ˈbʊdə/
noun
1.
the Buddha, ?563–483 bc, a title applied to Gautama Siddhartha, a nobleman and religious teacher of N India, regarded by his followers as the most recent rediscoverer of the path to enlightenment: the founder of Buddhism
Word Origin and History for Buddha
n.

1680s, from Pali, literally "awakened, enlightened," past participle of budh "to awake, know, perceive," related to Sanskrit bodhati "is awake, observes, understands" (see bid). Title given by his adherents to the man who taught this path, Siddhartha Gautama, also known to them as Sakyamuni "Sage of the Sakyas" (his family clan), who lived in northern India 5c. B.C.E.