They support arms, weapons linked with arrows in dramatic speech (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

in the definition, “arms” as in the parts of the body e.g. a sling can be used for a broken arm second definition / wordplay: SLINGS are also “weapons”, mentioned in the famous speech [wiki] in Hamlet: “…to suffer the slings and arrows of outrageous fortune…”