It's a very versatile root that appears in many English words, often indicating a connection to:
* Movement or flow: like in "aqueduct" (a structure that leads water), "duct tape" (a tape designed to guide or direct), or "conductor" (someone who leads an orchestra).
* Direction or guidance: like in "abduct" (to lead away by force), "induce" (to lead into a particular state or condition), or "educate" (to lead someone toward knowledge).
* Channels or passages: like in "duct" (a tube or passage that conducts fluids), or "conduit" (a pipe or channel for carrying fluids).
Understanding the meaning of "duct" can help you decipher the meaning of many English words.