intercept (v.)

c. 1400, "to cut off" (a line), "prevent" (the spread of a disease), from Latin interceptus, past participle of intercipere "take or seize between, to seize in passing," from inter "between" (see inter-) + -cipere, combining form of capere "to take, catch," from PIE root *kap- "to grasp." Related: Intercepted; intercepting.

"that which is intercepted," from intercept (v.). From 1821 of a ball thrown in a sport; 1880 in navigation; 1942 in reference to secret messages.