a European herb (Smyrnium olusatrum) somewhat resembling celery widely naturalized in Britain coastal regions and often cultivated as a potherb. [WordNet 1.5]
the famous king of Macedon, son of Philip; conqueror of Greece and Egypt and Persia; founder of Alexandria -- (356-323 BC). [WordNet 1.5]
Also see definition of "alexander" in Bible Study Dictionaries