From WordNet (r) 2.0 (August 2003) [wn]:
grinder
n 1: a large sandwich made of a long crusty roll split lengthwise
and filled with meats and cheese (and tomato and onion
and lettuce and condiments); different names are used in
different sections of the United States [syn: bomber,
hero, hero sandwich, hoagie, hoagy, {Cuban
sandwich}, Italian sandwich, poor boy, sub,
submarine, submarine sandwich, torpedo, wedge,
zep]
2: grinding tooth with a broad crown; located behind the
premolars [syn: molar]
3: machine that processes materials by grinding or crushing
[syn: mill]
4: a machine tool that polishes metal
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Grinder \Grind"er\, n.
1. One who, or that which, grinds.
[1913 Webster]
2. One of the double teeth, used to grind or masticate the
food; a molar.
[1913 Webster]
3. (Zool.) The restless flycatcher (Seisura inquieta) of
Australia; -- called also restless thrush and {volatile
thrush}. It makes a noise like a scissors grinder, to
which the name alludes.
4. A submarine sandwich. [local, U.S.]
Syn: submarine, hoagie.
[PJC]
Grinder's asthma, Grinder's phthisis, or Grinder's rot
(Med.), a lung disease produced by the mechanical
irritation of the particles of steel and stone given off
in the operation of grinding.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
hoagie \hoagie\, hoagy \hoagy\n.
a large sandwich on a long crusty roll that is split
lengthwise and filled with meats and cheese (and tomato and
onion and lettuce and condiments); different names are used
in different sections of the U. S., such as hero,
grinder, and submarine.
Syn: bomber, grinder, hero, hero sandwich, hoagie, Cuban
sandwich, Italian sandwich, poor boy, sub, submarine,
submarine sandwich, torpedo, wedge, zep.
[WordNet 1.5]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
submarine sandwich \sub`ma*rine" sand"wich\, n.
A large sandwich on an elongated roll, usually incompletely
cut into two halves, filed with various cold cuts, meatballs,
lettuce, cheese, tomatoes, olives, etc., and spiced
variously, and often having oil or other dressing applied;
called also hoagie, hero, hero sandwich, grinder,
sub, submarine, poor boy, and Italian sandwich. A
single such sandwich may consitute a substantial meal. Very
large variants are sometimes prepared for social gatherings
and cut into pieces for individual consumption.
[PJC]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Sub \Sub\, n.
1. A subordinate; a subaltern. [Colloq.]
[1913 Webster]
2. a shortened form of submarine, the boat.
[PJC]
3. a shortened form of submarine sandwich; also called
hero, hero sandwich, and grinder.
[PJC]