(informal) Very tired; exhausted. / (Canada) Mentally unwell due to isolation, especially due to working in a remote mine or camp; experiencing cabin fever. / Incorporating a bush, a mechanical part.

plural of bushing

(intransitive) To branch thickly in the manner of a bush. / To set bushes for; to support with bushes. / To use a bush harrow on (land), for covering seeds sown; to harrow with a bush.

(horticulture) A woody plant distinguished from a tree by its multiple stems and lower height, being usually less than six metres tall; a horticultural rather than strictly botanical category.

(Australia) Towards the direction of the outback.

(archaic) A tavern or wine merchant.

(colloquial) Not skilled; not professional; not major league.

(Australia) The countryside area of Australia that is less arid and less remote than the outback; loosely, areas of natural flora even within conurbations.

(baseball) Amateurish behavior, short for "bush league behavior"

A thick washer or hollow cylinder of metal. / A mechanical attachment, usually a metallic socket with a screw thread, such as the mechanism by which a camera is attached to a tripod stand.