గురువు

Etymology 1
From.

Noun

 * 1) teacher, preceptor, master, superior, learned man, father.
 * 2) a title or name of Brihaspati, tutor of the Gods, who was the husband of Tāra.
 * 3) any venerable man.
 * 4)  A long syllable.

Etymology 2
From.

Adjective

 * 1) heavy, weighty.
 * 2) great, important.
 * 3) difficult, arduous.
 * 4) venerable, respectable.
 * 5) hard of digestion.