An omission is the neglect to perform what the law requires. 2. When a public law enjoins on certain officers duties to be performed by them for the public, and they omit to perform them, they may be indicted: for example, supervisors of the highways are required to repair the public roads; the neglect to do so will render them liable to be indicted. 3. When a nuisance arises in consequence of an omission, it cannot be abated if it be a private nuisance without giving notice, when such notice can be given. Vide Branches; Commission; Nuisance; Trees.