K.c.b. definitions

K.C.B.

knight commander of the Bath, member of the second highest rank of knightly class in a British order of knighthood. See Bath, The Most Honourable ...
Found on http://www.britannica.com/eb/a-z/k/1

---

K.C.B.

Knight Commander of the Bath.
Found on https://www.infoplease.com/dictionary/kcb

---