Coat of arms of Osbaldeston

The blazon

ar, a mascle sa. betw. three ogresses'. — Crest, a nag s head, erased, per pale, ar. and sa. guttee, counterchanged, attired or. ( Another crest, a man, in armour, on horseback, all ppr. in his dexter hand a sword ar. hilt or.)

A blazon is the description of a coat of arms in the technical language of heraldry. The drawing comes from that text, and from nothing else.