(idiomatic) Do not criticise matters outside your field of expertise; mind your own business.

present participle of keep a dog and bark oneself

Alternative form of buy a dog and bark oneself

(figuratively, idiomatic) to listen for important information.

To fulfill a commitment as part of keeping to an agreement.

To remain vigilant and ready for action.

present participle of keep the home fires burning

present participle of keep one's eyes peeled

be on the alert; watch carefully or vigilantly for something

Alternative form of keep an eye peeled