From The Collaborative International Dictionary of English v.0.48:
Jot \Jot\, n. [L. iota, Gr. 'iw^ta the name of the letter [iota]
(E. i, Heb. y[=o]d), the smallest letter of the Greek
alphabet. Cf. Iota.]
An iota; a point; a tittle; the smallest particle. Cf. Bit,
n.
[1913 Webster]
Till heaven and earth pass, one jot or one tittle shall
in no wise pass from the law, till all be fulfilled.
--Matt. v. 18.
[1913 Webster]
Neither will they bate
One jot of ceremony. --Shak.
[1913 Webster]
From 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]