The term 'UMP's RULING' is a crossword solution composed of two words, 'CALL' and 'OUT'. The word 'CALL' is a four-letter word meaning to shout or summon, while the word 'OUT' is a three-letter word meaning away from home or excluded. Together, they form the phrase 'UMP's RULING', which is a term used in baseball to refer to the decision made by the umpire on a play. Umpires are responsible for making rulings on plays, such as whether a pitch was a ball or a strike, or whether a runner was safe or OUT. Umpires must make their rulings quickly and accurately, and their decisions are final.