Is “Bywords” a Scrabble word?
Yes
BYWORDS
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Bywords
noun
1.A proverb or proverbial expression, common saying; a frequently used word or phrase.
2.A characteristic word or expression; a word or phrase associated with a person or group.
3.Someone or something that stands as an example (i.e. metonymically) for something else, by having some of that something's characteristic traits.