The Head of a Convent of Nuns
This page is the CodyCross answer for the clue below from Train Travel, Group 708, Puzzle 1 (Operating Companies).
Question is: The Head of a Convent of Nuns
and the answer is: ABBESS
Word Meaning:
ABBESS — A female superior or governess of a nunnery, or convent of nuns, having the same authority over the nuns which the abbots have over the monks.
Definitions from Wiktionary.