Tril"i*thon (tr&icr;l"&icr;*th&ocr;n), n.; pl. Trilithons (#) [NL., fr. Gr. of or with three stones; (see Tri-) + stone.] Archaeol.

A monument consisting of three stones; especially, such a monument forming a kind of doorway, as among the ancient Celts. See Stonehenge.

© Webster 1913.

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