The Collaborative International Dictionary of English v.0.48:

Jot \Jot\, v. t. [imp. & p. p. Jotted; p. pr. & vb. n.
   Jotting.]
   To set down; to make a brief note of; -- usually followed by
   down.
   [1913 Webster]

WordNet (r) 3.0 (2006):

jotting
    n 1: a brief (and hurriedly handwritten) note [syn: jotting,
         jot]

Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "jotting":
   adversaria, aide-memoire, annotation, docket, entry, footnote,
   item, marginal note, marginalia, memo, memoir, memorandum,
   memorial, minutes, notation, note, register, registry, reminder,
   scholia, scholium