10 letters · 15 points in Scrabble
noun a large formal assembly
noun something regarded as a normative example
noun (diplomacy) an international agreement
originRecorded since about 1440, borrowed from Middle French convention, from Latin conventiō (“meeting, assembling; agreement, convention”), from conveniō (“come, gather or meet together, assemble”), from con- (“with, together”) + veniō (“come”). Equivalent to convene + -tion.
Etymology from Wiktionary, CC BY-SA 3.0