puzzle

 ACROSS

  1 Greek letter that resembles a rotated M

  6 Fork prong

 10 ___ Dems (U.K. political party)

 13 Elba of "Cats"

 14 What square feet measure

 15 "Mona ___"

 16 Intended

 17 Pokes, or punches

 18 Eerie sign

 19 *Four-legged helper at some baseball games

 21 *It's bigger than a twin

 23 Bitter drinks

 24 Hand support in a staircase

 26 *Meaty lunch order

 30 Uncooked

 33 Co.'s stock market debut

 34 Gurira of "Black Panther"

 35 High-profile celeb

 37 Not get soaked

 39 Put back to zero

 40 Vietnamese holiday

 41 Opposite of "nay"

 42 *Faster bus transit option

 46 Supposed reason

 47 "In your dreams!"

 51 Theater box perch

 54 100-degree day, say ... or each starred answer's end, based on a word that can precede it?

 56 Computer science pioneer Turing

 57 Elitist

 59 180 degrees from sur

 60 Very attentive

 61 Sky's color, in San Salvador

 62 Result of recon

 63 Hair-coloring substance

 64 Lightbulb unit

 65 Bawler's droplets

DOWN

  1 "The Lion King" protagonist

  2 Unimprovable

  3 Great homophone

  4 Great ones think alike

  5 Regarding

  6 ___ Mahal

  7 Baghdad citizens

  8 The Crab or the Horsehead, in astronomy

  9 Enter slowly

 10 Go out on a ___

 11 "Here's how ___ it ..."

 12 Musical group

 15 Shortcut's opposite

 20 Raisin, once

 22 When something is over, schedule-wise

 25 Spanish for "love"

 26 Heavy ___ (major players)

 27 Where the Pacers and Fever play, for short

 28 Be emotionally invested

 29 Chipper greeting

 30 Not commonplace

 31 A-Rod's first name

 32 Tendril of smoke

 36 Snake

 37 Pixy ___ (candy)

 38 3.8, to 38

 43 Up-and-down playground apparatus

 44 Verse of a poem

 45 Finish for the day, as a school

 47 Make amends

 48 Kinda ___

 49 Prefix for "galactic"

 50 Reads Braille, for example

 51 Cooking fat

 52 Moisturizer brand

 53 Show amazement

 55 "Will do!"

 58 Crunchy lunch order

solution