ossifrage /ˈɒsɪfɹɪd͡ʒ/ noun3 •(UK) The osprey. •(no longer used) Gypaetus barbatus, the bearded vulture, the diet of which is almost exclusively bone marrow.And these are they which ye shall have in abomination among the fowls; they shall not be eaten, they are an abomination: the eagle, and the ossifrage, and the ospray […] — 1611 •(no longer used) The young of the sea eagle or bald eagle. formsossifrages