Coat of arms of Whitmore

The blazon

vert, fretty or, on a canton of the second, a cinquefoil, pierced, az. — Crest, an arm, couped at the elbow and erect, habited or, turned up az. bolding in the hand ppr. a cinquefoil of the first, leaved vert, all within two wings, expanded, of the fourth.

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.