Keyword
What KeyWord is found in the definitions of each of the following?

56 primer, incipit, grammar, bibelot, kiss and tell (4 letters)
57 ennui, ho hum, stale, yawn, tedium (7 letters)
58 kegler, jorum, krater, monteith, mazer (4 letters)
59 spar, caddy, caisson, slipcase, chest (3 letters)
60 trig, skid, backpedal, disk, stoplight (8 letters)
61 fan, waft, aura, zephyr, cat's paw (6 letters)
62 bay, tan, teak, drab, russet (5 letters)
63 curt, gruff, surly, bluff, abrupt (7 letters)
64 effervesce, aeroembolism, amygdule, bleb, intumesce (6 letters)
65 sulphur, metalmark, aphrodite, caterpillar, lepidopteran (9 letters)
66 pan, f-stop, SLR, aperture, George Eastman (6 letters)
67 fig leaf, apatetic, cryptic, disguise, duck blind (10 letters)
68 snuffer, shammes, chandler, taper, nit (6 letters)
69 rum, staff, ferule, rattan, swagger stick (4 letters)
70 mantilla, inverness, pelerine, tabard, Roca (4 letters)
71 skat, spade, meld, Rolodex, pasteboard (4 letters)
72 finesse, Hoyle, stopper, blackleg, baccarat (7 letters)
73 pile, moquette, saxony, Wilton, wall-to-wall (6 letters)
74 deferent, port, convey, import, execute (5 letters)
75 donjon, bailey, keep, postern, rook (6 letters)
76 drop-in, sportswear, dishabille, confab, nonchalance (6 letters)
77 tom, puss, mouser, ailurophile, grimalkin (3 letters)
78 speleology, Lascaux, grotto, antre, spelunker (4 letters)
79 jointer, adhesive, matrix, concrete, mortar (6 letters)
80 farina, rye, muesli, Will Keith Kellogg, Pablum (6 letters)

Answers: 56. book, 57. boredom, 58. bowl, 59. box, 60. brake(s), 61. breeze, 62. brown, 63. brusque, 64. bubble, 65. butterfly, 66. camera, 67. camouflage, 68. candle, 69. cane, 70. cape, 71. card, 72. card(s), 73. carpet, 74. carry, 75. castle, 76. casual, 77. cat, 78. cave, 79. cement, 80. cereal,

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