(medicine) A symbol of the medical profession, consisting of a branched staff with a single snake twined around it.

(ecclesiastical, obsolete) A archbishop's cross. / (historical) An early instrument, consisting of a wooden rod with a sliding crosspiece, used for measuring the altitude of a star or for surveying.

(management) Any secondary business activity that supports the line functions of a business, but does not directly affect customers or profits

(US, Canada) Half-mast.

(idiomatic, often literary or poetic) Bread or some other staple foodstuff.

A staff with a crosspiece at the top like a crutch.

A navy surgeon of senior grade.

plural of staff surgeon

(heraldry) A knotted stick with short stumps of branches on each side.

(rail transport, historical) A block system in use on single-line railways, in which the stationmaster gives the driver a staff authorizing the driver to proceed over a given portion of track.