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

• Lexulous
• Wordscraper
• Wordosaur

n. Plural form of guideline.

n. a rule or set of rules giving guidance on how to behave in a situation.

"At the heart of our guidelines is a simple idea that also informs the community standards governing user participation: interaction enriches stories, and staff as well as users have a part to play in ensuring the quality of engagement matches that of our journalism."

guideline    guidepost    rule of thumb   

sidelines