Notelet/ˈnəʊtlət/ Definition 1 of 1Pro Tip 1/3Informal Use Notelets are usually informal and used in casual or personal communication, not for official purposes. Jotted a notelet to remind myself to call Mom. Pro Tip 2/3Physical Object A notelet often refers to a physical piece of paper, rather than a digital message. I found an old notelet from my friend tucked into a book. Pro Tip 3/3Short Message Notelets are intended for brief notes, rather than lengthy letters or detailed explanations. Passed a notelet in class to invite Sarah to the party.