An in/out field is a field setting, usually with 5 close fielders and 3 on the boundary, designed to force batsmen into errors by trying to deny the opportunity to score singles while saving easy boundaries. Incoming batsman
the batsman next to come in in the listed batting order. The incoming batsman is the one who is out when a "timed out" occurs. Inswing or in-swinger 
a delivery that curves into the batsman in the air from off to leg. In-cutter
a delivery that moves into the batsman after hitting the surface. Infield
the region of the field that lies inside the 30-yard circle (27 m) or, in the days before defined circles, the area of the field close to the wicket bounded by an imaginary line through square leg, mid on, mid off and cover point. Innings
one players or one teams turn to bat (or bowl). Unlike in baseball, the cricket term "innings" is both singular and plural. Inside edge
The edge of the bat facing the batsmens legs. The ball then generally goes on the stumps, legs or at Forty-Five. Inside-out
when a batsman opens the chest and plays a ball, usually aggressively and often dancing down the pitch, toward the covers. Its (just) not cricket
An idiomatic expression, objecting to actions that the speaker feels are unsporting, unfair, or against the spirit of the game

J
Jack 
a number eleven batsman. From the jack playing card, which ranks immediately after the number ten in each suit.
ODI
see One Day International

Odds match
a match in which one side has more players than the other. Generally, the extra players were allowed to field as well as bat and so the bowling side had more than 11 fielders. Off break
an off spin delivery which, for a right-arm bowler and a right-handed batsman, will turn from the off side to the leg side (usually into the batsman). Off cutter
A cutter which, for a right-handed batsman, turns from the off side to the leg side. The pace bowling equivalent of an off break. Off side
the half of the pitch in front of the batsmans body as they take strike. For a right-handed batsman this is the right half of the pitch, looking up the wicket towards the bowler, and the left half for the left-handed batsman. The opposite of leg side. Off spin
the style of spin bowling produced by right-arm finger spin. So called because the stock delivery is an off break. Common variations include the arm ball and doosra. Off the mark
when the first run is scored by a batsman, it is said that the batsman is off the mark. If a batsman gets out without scoring, it is said that the batsman failed to get off the mark. Off theory
A tactic sometimes used by the fielding side. The bowler aims for a line wide of off stump and most fielders are placed on the off side.