'Grindstone' definitions:

Definition of 'grindstone'

(from WordNet)
noun
A revolving stone shaped like a disk; used to grind or sharpen or polish edge tools

Definition of 'Grindstone'

From: GCIDE
  • Grindstone \Grind"stone`\, n. A flat, circular stone, revolving on an axle, for grinding or sharpening tools, or shaping or smoothing objects. [1913 Webster]
  • To hold one's nose to the grindstone, {To bring one's nose to the grindstone}, to oppress one; to keep one in a condition of servitude.
  • To put one's nose to the grindstone (a) to oppress one; to cause one to work hard and steadily. (b) to set oneself to a long and arduous task.
  • To keep one's nose to the grindstone to continue at a long and arduous task; to apply oneself steadily to one's duties. [1913 Webster +PJC]
  • They might be ashamed, for lack of courage, to suffer the Laced[ae]monians to hold their noses to the grindstone. --Sir T. North. [1913 Webster]

Grindstone-Rowes Run, PA -- U.S. Census Designated Place in Pennsylvania

From: Gazetteer 2000
Name :
Grindstone-Rowes Run, PA -- U.S. Census Designated Place in Pennsylvania
Population (2000) :
1141
Housing Units (2000) :
530
Land area (2000) :
2.145976 sq. miles (5.558052 sq. km)
Water area (2000) :
0.000000 sq. miles (0.000000 sq. km)
Total area (2000) :
2.145976 sq. miles (5.558052 sq. km)
FIPS code :
31594
Located within :
Pennsylvania (PA), FIPS 42
Location :
40.012106 N, 79.820708 W
ZIP Codes (1990) :
15442
Note :
some ZIP codes may be omitted esp. for suburbs.