a place of worship serving a residence or institution
a room or bay in a church for prayer or minor religious services
a place of worship used by a Nonconformist Christian group
the doctrines or practices of such a group
a choir of singers belonging to a chapel
a chapel service or assembly
(treated as sing. or pl) the members of a trade union, esp in a printing or publishing house
Middle English via Old French from medieval Latin cappella, dimin. of late Latin cappa cloak. The first chapel was built to house the cloak of St Martin of Tours