intermural

[in-ter-myoo r-uh l]
adjective
  1. of, relating to, or taking place between two or more institutions, cities, etc.: an intermural track meet.
  2. occurring or being between walls, as of buildings or cities: a narrow, intermural forecourt.

Origin of intermural

First recorded in 1650–60, intermural is from the Latin word intermūrālis between walls. See inter-, mural
Can be confusedintermural intramural
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for intermural
adj.

1650s, from Latin intermuralis "situated between walls," from inter- "between" (see inter-) + murus (genitive muralis) "wall" (see mural).

Online Etymology Dictionary, © 2010 Douglas Harper