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

hag \hag\ ha^g, n. oe. hagge, hegge, witch, hag, as.
   haegtesse; akin to ohg. hagazussa, g. hexe, d. heks, dan.
   hex, sw. haumxa. the first part of the word is prob. the
   same as e. haw, hedge, and the orig. meaning was perh., wood
   woman, wild woman. root12.
   1. a witch, sorceress, or enchantress; also, a wizard. obs.
      "silenus that old hag." --golding.
      1913 webster

   2. an ugly old woman. --dryden.
      1913 webster

   3. a fury; a she-monster. --crashaw.
      1913 webster

   4. zool. an eel-like marine marsipobranch myxine
      glutinosa, allied to the lamprey. it has a suctorial
      mouth, with labial appendages, and a single pair of gill
      openings. it is the type of the order hyperotreta.
      called also hagfish, borer, slime eel, sucker, and
      sleepmarken.
      1913 webster

   5. zool. the hagdon or shearwater.
      1913 webster

   6. an appearance of light and fire on a horse's mane or a
      man's hair. --blount.
      1913 webster

   hag moth zool., a moth phobetron pithecium, the larva
      of which has curious side appendages, and feeds on fruit
      trees.

   hag's tooth naut., an ugly irregularity in the pattern of
      matting or pointing.
      1913 webster
see also:
myxine glutinosa hyperotreta hagfish borer slime eel sucker 
sleepmarken hag moth phobetron pithecium hag's tooth 

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

sleepmarken \sleep"mark`en\, n. zool.
   see 1st hag, 4.
   1913 webster
see also:
hag 

Sleepmarken >> S Words
Sleepmarken, definition of term: Sleepmarken
sleepmarken_pag1.html