From Longman Dictionary of Contemporary Englishjot something ↔ down phrasal verbWRITEto write a short piece of information quickly Let me jot down your number and I’ll call you tomorrow. → jot→ See Verb table
Examples from the Corpus
jot down• You can just quickly just jot that all down.• You should jot questions down as they occur to you during the talk.• It is a good idea to jot the points down on paper before you dial the number. 