The Oxford Thesaurus An A-Z Dictionary of Synonyms - jot v.

1) Usually, jot down. make a note of, write or note (down) , put or set or take down, record: Jot down this telephone number. --n. 2) scrap, grain, (wee) bit, speck, mite, iota, whit, particle, tittle, Colloq slightest, US and Canadian tad, smidgen or smidgin: I don't care a jot what she thinks about the situation in Central America.