Crenellation

parapet on top of a castle wall, with a series of gaps (embrasures or crenelles) between raised portions (merlons), allowing defenders to shoot through; also called battlements
Found on http://www.castlexplorer.co.uk/glossary.php

Crenellation

With battlements or loopholes
Found on http://www.digitalstroud.co.uk/glossary.php?glossgroup=W-Z

Crenellation

The treatment of a parapet wallhead as in a mediaeval castle, with tall and short sections alternating. Common in early Gothic Revival churches. Related Words: Gothic (revival); Parapet; Wallhead
Found on http://www.maintainyourchurch.org.uk/ToolkitModules/Toolkit1Glossary/tabid/

crenellation

crenellation 1. The action of constructing ramparts with gaps for firing guns or arrows. 2. A rampart built around the top of a castle with regular gaps for firing arrows or guns.
Found on http://www.wordinfo.info/words/index/info/view_unit/561/

crenellation

fortification- a 'license to crenellate' was official permission to raise a fortified building or fortify an existing structure. Jagged protective stonework at the top of a castle wall
Found on http://www.castles-of-britain.com/glossary.htm

Crenellation

The arrangement of battlements into a line of alternating merlons and crenels.
Found on http://great-castles.com/glossary.php

Crenellation

parapet on top of a castle wall, with a series of gaps (embrasures or crenelles) between raised portions (merlons), allowing defenders to shoot through; also called battlements
Found on http://www.castlexplorer.co.uk/glossary.php

Crenellation

A sequence of alternating raised and lowered wall sections at the top of a high exterior wall or parapet. Crenellations were originally employed for defensive purposes (one could hide behind a raised wall section, while shooting down at enemies from over a lowered wall section), but were later used for decoration. Also known as a battlement.
Found on http://www.architecturaltrust.org/outreach/education/glossary-of-architectu

Crenellation

Square openings in the top of a parapet
Found on http://www.trailend.org/article-architecture.htm
No exact match found