D defs.my
Entry 3 senses Webster, 1913

Pax

/păks/ · IPA /pæks/
01 n. The kiss of peace; also, the embrace in the sanctuary now substituted for it at High Mass in Roman Catholic churches.
  1. 1.
    The kiss of peace; also, the embrace in the sanctuary now substituted for it at High Mass in Roman Catholic churches.(Eccl.)
  2. 2.
    A tablet or board, on which is a representation of Christ, of the Virgin Mary, or of some saint and which, in the Mass, was kissed by the priest and then by the people, in mediæval times; an osculatory. It is still used in communities, confraternities, etc.(R. C. Ch.)
    “Kiss the pax, and be quiet like your neighbors.” Chapman.
  3. 3.
    Friendship, or a friend; -- esp. in the phrases to make pax with, to make friends with, to be good pax, to be good friends; also, truce; -- used esp. interjectionally.[Eng. Schoolboy Slang]