Fill in the crossword puzzle based on the given definitions or words.

Crossword Puzzle Solution:

Here's the completed crossword based on the visible entries and common crossword conventions:

• 1 Across: Summer (Visible: S u m m e r)
• 2 Down: Spring (Visible: S p r i n g - implied by common season order and letter count)
• 3 Across: Autumn (Visible: A u t u m n)
• 7 Across: June (Visible: J u n e)
• 12 Down: December (Visible: D e c e m b e r)
• 14 Down: July (Visible: J u l y - implied by June and seasonality)
• 16 Across: ... (Cannot determine without more clues or letters)
• 4 Down: ... (Cannot determine)
• 5 Down: ... (Cannot determine)
• 6 Down: ... (Cannot determine)
• 8 Down: ... (Cannot determine)
• 9 Down: ... (Cannot determine)
• 10 Down: ... (Cannot determine)
• 11 Across: ... (Cannot determine)
• 13 Across: ... (Cannot determine)
• 15 Down: ... (Cannot determine)

Note: Some words could not be fully determined due to missing letters or clues. The provided solution includes all clearly identifiable words and their corresponding numbers.