Crossword puzzle clue "5 by 5 square crossword e g"

Like a crossword clue about crossword clues, say

Actress/singer Helen with the CD "Crossword" (the title track starts "I found my true love today doing the crossword on the back of the 6 train")

5-by-5-square crossword, e.g.

Square part of a square meal?

___ Square (Times Square, once)

Square, in old slang, as indicated by forming a square with one's hands

Washington Square Park to Union Square Park dir.

Number whose square equals its square root