From WordNet (r) 3.0 (2006) [wn]:
marc
n 1: made from residue of grapes or apples after pressing
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Marc \Marc\, n. [F.]
The refuse matter which remains after the pressure of fruit,
particularly of grapes.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Marc \Marc\, n. [AS. marc; akin to G. mark, Icel. m["o]rk, perh.
akin to E. mark a sign. [root]106, 273.] [Written also
mark.]
1. A weight of various commodities, esp. of gold and silver,
used in different European countries. In France and
Holland it was equal to eight ounces.
[1913 Webster]
2. A coin formerly current in England and Scotland, equal to
thirteen shillings and four pence.
[1913 Webster]
3. A German coin and money of account. See Mark.
[1913 Webster]