rib_cage has definitions from the fields of anatomy,zoology
[ noun ] (anatomy,zoology) the bony enclosing wall of the chest

Used in print

(Mr. America, 4:6...)

So right_away Claude introduced Henri to his famous `` moon '' bench and proceeded to teach him his first Push-Pull_Super-Set consisting_of the wide grip Straight-Arm_Pullover ( the `` pull '' part of the Push-Pull_Super-Set ) which dramatically widens the rib_cage and strongly affects the muscles of the upper back and chest , and the collar-to-collar Bench_Press which specifically works_on the chest to build those wide , Reeves-type `` gladiator '' pecs , while stimulating the upper lats and frontal deltoids .

The Pushup done in this manner is the greatest pectoral rib_cage stretcher ever invented !