This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of or pertaining to megaliths, to the people who made them, or to the period when they were made

adj. Of or pertaining to megaliths or the period during which they were erected.

Consisting of megaliths or very large stones: as, megalithic monuments; the megalithic architecture of Egypt.

adj. of or relating to megaliths or the people who erected megaliths

"If, as seems probable, the idea of megalithic building was brought to Europe by the immigration of a new race it is possible that a branch of this race entered Sicily."

rock-cut    stateliest    barn-like    roofless    rock-hewn