Alb

n. white robe worn by priests

ALB is a three-letter abbreviation may refer to:AlbuminAlbania, from its ISO codeAlbanian language, from its ISO 639 codeAlbany International Airport, from its IATA codeAlbrighton railway station, from its National Rail codeAsian long-horned beetleAbraham Lincoln BrigadeAll-weather Life Boat, See for example RNLI
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The alb, one of the liturgical vestments of the Roman Catholic, Anglican and many Protestant churches, is an ample garment of white linen coming down to the ankles and usually girded with a cincture. It is simply the long linen tunic used by the Romans of old. In Early Medieval Europe it was also normally worn by secular clergy in non-liturgical contexts..
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Noun
1. a white linen liturgical vestment with sleeves; worn by priests
(hypernym) vestment

(n.)
A vestment of white linen, reaching to the feet, an enveloping the person; -- in the Roman Catholic church, worn by those in holy orders when officiating at mass. It was formerly worn, at least by clerics, in daily life.
  

Latin root form for the color white.