In strait or careful keeping, securely; in close confinement or strict custody. Obsolete.

In a close covered manner; closely.

In close confinement; under strict control.

at (also to) hard meat: in close confinement; under strict restraint. Obsolete.

In strict confinement. Also †close up.

So as to leave no passage out or in; ‘without inlet or outlet’ (Johnson). Hence, in a place strictly shut up, in close confinement.