1. Sight at a golf course or grocery
2. Spacewalks and moonwalks, briefly
3. Pool accessory
4. Battles
5. Southern st.
6. Was an annoying spouse
7. Bats are smaller than normal in it
8. "Modern Gallantry" essayist
9. Button that might look like a paper airplane
10. Guayaquil girls: abbr.
11. Big name in coverage
12. "It was me"
13. Greenish shade
14. Ending for hip
16. One fifth of the black keys
20. Impede
22. One maturing quickly, for short
23. Neighbor of Lydia
24. Cultural symbol
25. "Very funny"
26. Flip one's lid?
27. Zest
28. About
29. Put on
30. Zeroed (in on)
32. "Humboldt's Gift" author Bellow
33. Tide may wash it away
34. Tennessee state flower
36. Second-largest city in Kenya
41. Tussaud, e.g.
42. Seed with real potential
43. 2004 Sondheim musical, with "The"
44. "Home Alone" co-star
45. Stamp with a date
46. Staubach's sch.
47. Setback
48. Go on (one's way)
49. Secluded habitat
50. Longtime "Today" host
51. Habitual
52. "As __ it"
53. Feudal peasant
55. Josh who voices Olaf