1.  broad arrow(n = noun.communication) - an arrowhead mark identifying British government property;
is a kind of mark, marker, marking

2.  broad arrow(n = noun.communication) - a mark shaped like an arrowhead; used to mark convicts' clothing;
is a kind of mark

3.  broad arrow(n = noun.artifact) - an arrow with a wide barbed head;
is a kind of arrow

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