Definitions of eager:

• noun:   a high wave (often dangerous) caused by tidal flow (as by colliding tidal currents or in a narrow estuary)
• adjective:   having or showing keen interest or intense desire or impatient expectancy

  Example: "Eager to learn"

• adjective:   marked by active interest and enthusiasm

  Example: "An eager beaver"

• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #11392)