пичкать

Etymology
Per Vasmer, of unclear etymology, and not obviously related to,.

Verb

 * 1)  to overfeed
 * 2)  to overdose, to give too much medicine to (someone)
 * 3)  to stuff, to cram (someone with useless or unnecessary knowledge or information)
 * 4)  to oversupply (useless or unnecessary knowledge or information)