drop ball

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drop ball [′dräp ‚bȯl]

(engineering)

A ball, weighing 3000-4000 pounds (1400-1800 kilograms), dropped from a crane through about 20-33 feet (6-10 meters) onto oversize quarry stones left after blasting; this method is used to avoid secondary blasting.

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No references found			The match should be stopped and a drop ball played. Life could be fun beach for footie fans; Roger's RANT by Birmingham Mail (England) A drop ball should have been awarded as the inflatable was classed as an outside agent. YOU MADE A BENCH BALLS-UP OF THAT MIKE by Daily Record (Glasgow, Scotland) Even referees in local parks should know that if there is an outside agent on the pitch then you stop the game and restart it with a drop ball. Ex-referees hit out at decision by Daily Post (Liverpool, England)			Droma Dromadidae Drôme dromedary Dromiacea Dromiceidae Dromiceiidae Dromio Dromomania dromophobia Dromos drone drongo Drongos Drood, Edwin droogs DROOL drool-proof paper droop droop governor Droop Mountain Battlefield State Park drooped ailerons Drop drop apron drop arch drop ball drop bar drop black drop bottom-seal drop box drop bracket transposition drop cable drop cap drop ceiling drop chute drop cloth drop cord drop curtain drop elbow drop ell drop escutcheon drop folder drop forging drop hammer drop handle drop in drop indicator drop key plate drop log drop model of nucleus drop molding			drop a line and drop a few lines; drop a note drop across drop aitches drop aitches drop aitches drop aitches drop aitches drop altitude drop altitude drop anchor Drop and Hook Drop and insert Drop And Run drop apron drop arch drop arch drop arm test drop around Drop attack Drop attack Drop attack Drop attack drop away drop away drop back drop back drop back drop back drop back drop back drop ball drop bar Drop Beats Not Bombs drop behind drop behind drop behind drop behind drop behind drop behind drop below drop beneath the/ radar drop biscuit drop black drop black drop bottom-seal Drop box drop bracket transposition drop bundle drop bundle drop bundle drop bundle drop bundle drop by drop by drop by drop by drop by drop by Drop by drop Drop by drop drop by the wayside

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