chapel: [13] Chapel has a very specific source: it was originally applied to the shrine built to preserve the cloak (late Latin cappa) of St Martin of Tours as a holy relic. The diminutive form of cappa was cappella, and this came to be applied to the building itself, gradually being broadened out subsequently to any moderately sized place of worship. The word reached English via Old French chapele. The church functionary who guarded St Martin’s cloak was known by the derivative term cappellānus, source of English chaplain [12]. => chaplain[chapel etymology, chapel origin, 英语词源]