Coat of arms of Coyne

The blazon

or, on a bend sa. three trefoils, slipped, ar. — Crest, a cubit arm, erect, vested sa. slashed and cuffed or, holding in the hand ppr. a cutlass ar. embrued with blood in three places, hilt and pomel of the second.

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.