[1] : The Collaborative International Dictionary of English v.0.48

rusk \rusk\, n. sp. rosca de mar sea rusks, a kind of biscuit,
   rosca properly meaning, a screw, spiral.
   1. a kind of light, soft bread made with yeast and eggs,
      often toasted or crisped in an oven; or, a kind of
      sweetened biscuit.
      1913 webster

   2. a kind of light, hard cake or bread, as for stores.
      --smart.
      1913 webster

   3. bread or cake which has been made brown and crisp, and
      afterwards grated, or pulverized in a mortar.
      1913 webster

[2] : WordNet (r) 2.0

rusk
     n : slice of sweet raised bread baked again until it is brown
         and hard and crisp syn: zwieback, brussels biscuit,
         twice-baked bread
see also:
zwieback brussels biscuit twice-baked bread 

[3] : U.S. Gazetteer (1990)

rusk, tx city, fips 63848
  location: 31.79758 n, 95.14853 w
  population 1990: 4366 1486 housing units
  area: 17.3 sq km land, 0.1 sq km water

[4] : U.S. Gazetteer Counties (2000)

rusk -- u.s. county in texas
   population 2000:    47372
   housing units 2000: 19867
   land area 2000:     923.548944 sq. miles 2391.980683 sq. km
   water area 2000:    15.069854 sq. miles 39.030740 sq. km
   total area 2000:    938.618798 sq. miles 2431.011423 sq. km
   located within:       texas tx, fips 48
   location:             32.156777 n, 94.801410 w
   headwords:
    rusk
    rusk, tx
    rusk county
    rusk county, tx

[5] : U.S. Gazetteer Counties (2000)

rusk -- u.s. county in wisconsin
   population 2000:    15347
   housing units 2000: 7609
   land area 2000:     913.127694 sq. miles 2364.989771 sq. km
   water area 2000:    17.766380 sq. miles 46.014711 sq. km
   total area 2000:    930.894074 sq. miles 2411.004482 sq. km
   located within:       wisconsin wi, fips 55
   location:             45.437305 n, 91.136153 w
   headwords:
    rusk
    rusk, wi
    rusk county
    rusk county, wi

[6] : U.S. Gazetteer Places (2000)

rusk, tx -- u.s. city in texas
   population 2000:    5085
   housing units 2000: 1539
   land area 2000:     6.822110 sq. miles 17.669182 sq. km
   water area 2000:    0.022618 sq. miles 0.058581 sq. km
   total area 2000:    6.844728 sq. miles 17.727763 sq. km
   fips code:            63848
   located within:       texas tx, fips 48
   location:             31.798254 n, 95.149865 w
   zip codes 1990:    
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    rusk, tx
    rusk

Rusk >> R Words
Rusk, definition of term: Rusk
rusk_pag1.html