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

225 oblique, octant, ell, mitre joint, northwest (10 letters)
226 caliber, numerator, mixed number, cross multiply, time signature (8 letters)
227 haku, crisper, remount, catadromous, greengrocer (5 letters)
228 alfresco, evergreen, crisper, catadromous, haku (5 letters)
229 gall, grind, bushing, detrition, tribology (8 letters)
230 orchestra, fore, head-on, anterior, prostyle (5 letters)
231 spume, foam, lather, mantle, head (5 letters)
232 countermine, ploy, manqué, disconcert, baffle (12 letters)
233 chaff, killjoy, joy ride, merriment, frolicsome (3 letters)
234 rain check, time machine, evermore, oneiromancy, by-and-by (6 letters)

Answers: 225. forty-five, 226. fraction, 227. fresh, 228. fresh, 229. friction, 230. front, 231. froth, 232. frustrate(d), 233. fun, 234. future,

... or try our companion Rhyme-n-Reason