Speaking in the key of "E"

Originally uploaded by Marcus M

1. The fifth letter of the modern English alphabet.

2. Any of the speech sounds represented by the letter e.

3. The fifth in a series.

4. Something shaped like the letter E.

5. E A grade that indicates failing status.

6. Music.
a. The third tone in the scale of C major or the fifth tone in the relative minor scale.
b. A key or scale in which E is the tonic.
c. A written or printed note representing this tone.
d. A string, key, or pipe tuned to the pitch of this tone.

7. e Mathematics. The base of the natural system of logarithms, having a numerical value of approximately 2.71828.