Definify.com
Webster 1913 Edition
Easterling
1. 
A native of a country eastward of another; – used, by the English, of traders or others from the coasts of the Baltic. 
Merchants of Norway, Denmark, . . . called . . . 
Easterlings 
because they lie east in respect of us. Holinshed.
2. 
A piece of money coined in the east by 
Richard II. 
of England. Crabb.
 3. 
(Zoöl.) 
The smew. 
 Webster 1828 Edition
Easterling
E'ASTERLING
,Noun.
  1.
  A species of waterfowl.