-irfst ysllable of a famous physicist's last name-?
13D
Drug you put on your tongue to trip out, not shrooms, not ayahuasca. 3-letter acronym. Some people believe a song by The Beatles, about a girl in the atmosphere with gems, is inspired by this
16D
Intestine parts
20D
Songwriter Mann
21D
_____ J. Sparrow
22D
9 was scared of 7 because 7 _____ 9
23D
Carlsbad Cavern, e.g.
26D
Borrows the mower again for a monetary exchange
27D
"No blanks ands or buts!"?
28D
Small degree
30D
"_____ River" -John Denver (1971)
34D
Present tense of 22-Down
35D
Marc Cuban owned, NBA player
37D
Give some "elbow grease"
38D
Storied hard bed hibernator
39D
'Home Improvement' Borlands
40D
Uum prefix?
41D
"Oh _____! Don't you cry for me"
42D
Nickelodeon slime
43D
The Bush or The Roosevelt, e.g.
45D
Canadian folklore hero Paul
48D
Popular, rolled up spicy corn chip
50D
1959 Golden Globe nominee Palmer
53D
Superficially fluent
54D
Character choice in Mariokart
55D
Banned food ingredient, abbr.
56D
Family name of a famous spaghetti sauce that was recently purchased by Campbell's for $2.7 billion
57D
Booboos
59D
French football org.
60D
Barely squeeze by; _____ out a living. Hot tip: the answer is always _____. Uhh, Maybe... se___r or re___d midfix?
61D
Your brother's daughter's child's great grandma's husband