footnote

Noun
  1. A printed note placed below the text on a printed page (synset 106776955)
    is a type of: annotation, notation, note - a comment or instruction (usually added)
    same as: footer
Verb
  1. Add explanatory notes to or supply with critical comments (synset 201708812)
    "The scholar annotated the early edition of a famous novel"
    referred to in: authorship, composition, penning, writing - the act of creating written works
    is a type of: compose, indite, pen, write - produce a literary work
    same as: annotate

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