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

• Lexulous
• Wordscraper
• Wordosaur

n. work done in addition to one's normal duties

n. Work aside from regular work; subordinate or secondary business.

n. Work done at odd times or in addition to one's regular work; an occasional task or performance.

n. A work that has failed in the doing; a work that has proved a failure.

"For naval service is a matter of art, like anything else; and does not admit of being practised just when it may happen, as a bywork; but rather does not even allow of anything else being a bywork to it."

byzantine greek