zone, n. area, region, district, quarter; locality, section, territory, realm, domain, province; department, precinct, bailiwick; tract, stretch, terrain, field; expanse, sweep, reach, surface; arena, ring, sphere, circle, orbit; latitude, hemisphere, climate, clime; locale, location, spot, place, part, situation.
zoo, n. 1. zoological garden, menagerie, Ger. Tier-garten, Fr. jardin zoologique, park.
2. Informal, madhouse, bedlam, chaos, confusion, three-ring circus; disorder, disarray.
zoom, v. buzz, whiz, zing, streak, tear, rip; sweep, speed, clip, flit, breeze, outstrip the wind; soar, fly, jet, zip, shoot; speed, race, Inf. eat up the road, Inf. tear up the track, SI. burn, SI. sizzle, SI. move; rush, put on steam, go all out, Inf. pour it on, Inf. barrel, hurtle, bolt; Inf. run like mad, ride hellbent for leather, run like a scared rabbit, SI. go like a bat out of hell, go like lightning or greased lightning.
zzz, v. Slang, snore, SI. log z's, SI. saw wood, SI. saw logs, SI. saw gourds, snort, wheeze, buzz; nap, snooze, doze, drowse, nod off, catch forty winks; call it a day, turn in, retire, SI. hit the hay or the sack, Baby Talk, go nighty-night or beddy-bye.