Word of the Week: "A"

Welcome...this is the first installment of a new feature, Word of the Week, that will post each Wednesday.  I'll go through the alphabet, using both upper and lower case of each letter and find a word at random in the dictionary...one that I don't know and maybe will be new to many of you as well.   I love a bit of structure and pattern, so I'm going to have fun....let's see 26 letters, one uppercase and one lower case....52 letters, 52 weeks in a year....Perfect!!!  Starting today with a capital "A", we have the Amga River....I'm off to check my atlas!