procession

n. succession of people (or cars, etc.); forward movement of a succession

A procession (via Middle English processioun, French procession, derived from Latin, processio, itself from procedere, to go forth, advance, proceed) is, in general, an organized body of people advancing in a formal or ceremonial manner.
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Noun
1. (theology) the origination of the Holy Spirit at Pentecost; "the emanation of the Holy Spirit"; "the rising of the Holy Ghost"; "the doctrine of the procession of the Holy Spirit from the Father and the Son"
(synonym) emanation, rise
(hypernym) origin, origination, inception
(classification) theology, theological system
2. the group action of a collection of people or animals or vehicles moving ahead in more or less regular formation; "processions were forbidden"
(hypernym) group action
(hyponym) convoy
3. the act of moving forward toward a goal
(synonym) progress, progression, advance, advancement, forward motion, onward motion
(hypernym) motion, movement, move
(hyponym) push
(derivation) proceed, go forward, continue

n. procession, walk

(v. t.)
To ascertain, mark, and establish the boundary lines of, as lands.
  

(v. i.)
To march in procession.
  

(v. i.)
To honor with a procession.
  

(n.)
The act of proceeding, moving on, advancing, or issuing; regular, orderly, or ceremonious progress; continuous course.
  

(n.)
That which is moving onward in an orderly, stately, or solemn manner; a train of persons advancing in order; a ceremonious train; a retinue; as, a procession of mourners; the Lord Mayor's procession.
  

(n.)
An orderly and ceremonial progress of persons, either from the sacristy to the choir, or from the choir around the church, within or without.
  

(n.)
An old term for litanies which were said in procession and not kneeling.