(Chapter 12) Footnote 51:

“. . . and which used to be compared by the ancients to the underside of a table or a litter” (1555). This reference is most likely to the clinoid processes, four apophyses of the sphenoid bone thought to resemble the knobs or knobby feet of a bedstead <Gk. kli/nh = bed, but the nomenclature may be of later date as we do not find it in TLG or LSJ.