名詞 chaplain:

1. a clergyman ministering to some institution

chap.lain

n.Abbr. Ch.,ch.（名詞）縮寫 Ch.,ch.
A member of the clergy attached to a chapel.
牧師：附屬小教堂的牧師

A member of the clergy who conducts religious services for an institution, such as a prison or hospital.
監(jiān)獄牧師，醫(yī)院牧師：在某機(jī)構(gòu)，如監(jiān)獄或醫(yī)院里執(zhí)行宗教儀式的牧師
A member of the clergy who is connected with a royal court or an aristocratic household.
牧師：王宮或貴族府邸里的牧師
A member of the clergy attached to a branch of the armed forces.
隨軍牧師：從屬于某一支軍隊(duì)的牧師

來源：
Middle English chapelein
中古英語 chapelein
from Old French chapelain
源自 古法語 chapelain
from Medieval Latin capell3nus
源自 中世紀(jì)拉丁語 capell3nus
from capella [chapel] * see chapel
源自 capella [附屬教堂] *參見 chapel

【引伸】
chap.laincy 或
chap.lainship.
n.（名詞）