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 principle.

"That, as precedents for the construction of a successful flying machine, the investigation of some species of birds as a base of the principles of all is correct only in connection with the species and habits of the bird; that the _general mechanical principles_ of flight applicable to the _operation_ of the _same unit_ of wing in _all_ species are alone applicable to the flying machine."

moral code   

principals   

contract    forms    objective    assembly    subject    story    laugh    gift    author    laws