NAMAS

Namasté or Namaskar ( in Nepali and Hindi (from internal sandhi between and ) is an Indian greeting or parting phrase as well as a gesture. Taken literally, it means "I bow to you". The word is derived from Sanskrit (namas): to bow, obeisance, reverential salutation, and (te): "to you" . When spoken to another person, it is commonly accompanied by a slight bow made with hands pressed together, palms touching and fingers pointed upwards, in front of the chest. The gesture can also be performed wordlessly and carry the same meaning.
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Namas (Sanskrit) [from nam to bow, make reverence; cf Pali namo] A reverence, consisting of an inclination of the body; both in act and in writing a reverential salutation. "The first word of a daily invocation among Buddhists, meaning 'I humbly trust, or adore, or acknowledge' the Lord, as: 'Namo tasso Bhagavato Arahato' etc., addressed to Lord Buddha. The priests are called 'Masters of Namah' [Namas] -- both Buddhist and Taoist, because this word is used in liturgy and prayers, in the invocation of the Tiratna, and with a slight change in the occult incantations to the Bodhisattvas and Nirmanakayas" (TG 224).
Namaste (honor, reverence, to thee!) is used in greeting gurus and spiritual sages.