merrimack merrimac • merrimack river · · · Info · Definitions · Characters · · merrimack · · Text Latin · · Script 9 · · Length 3 · · Syllables Definitions · · · (noun) a river that rises in south central New Hampshire and flows through Concord and Manchester into Massachusetts and empties into the Atlantic Ocean. Synonyms: Merrimack, Merrimack River. · · Noun Definition 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 k latin small letter k U+006B m latin small letter m U+006D r latin small letter r U+0072