Webster's Revised Unabridged Dictionary · 1913

Doit

Doit (doit) , noun

[Dutch duit, Icelandic pveit, prop., a piece cut off. See Thwaite a piece of ground, Thwite.]

1.
A small Dutch coin, worth about half a farthing; also, a similar small coin once used in Scotland; hence, any small piece of money. — Shakespeare
2.
A thing of small value; as, I care not a doit.