Related Clues:

• What ''end'' begins with
• Letter in red and violet
• Sound from pets and jets
• Sound from wrens?
• Nest sound?
• Egghead?
• What 1-Down has that 1-Across lacks
• Everything begins with it
• Half a jet-setting duo?
• First sound from elephants?
• Beginning to end?
• Vowel sound in "tent" or "peg"
• Vowel sound in "egg"