| Engine type | 11 |
| Engine type pioneered by the Buick Special | 42 |
| Engine type, in mechanic shorthand (anagram of OH, DC) | 54 |
| Engine unit | 11 |
| Engine using a stream of compressed air | 39 |
| Engine valve | 12 |
| Engine warning? | 15 |
| Engine warnings | 15 |
| Engine wheel | 12 |
| Engine with a combustor | 23 |
| Engine with dome-shaped combustion chambers | 43 |
| Engine's must-have | 22 |
| Engine's noise | 18 |
| Engine's output | 19 |
| Engine's sound | 18 |
| Engine's throttle | 21 |
| Engine-cleaning brand | 21 |
| Engine-room aides | 17 |
| Engine-room employee | 20 |
| Engine-room helper | 18 |
| Engine-room man | 15 |
| Engine-room worker | 18 |
| Engine-speed abbr. | 18 |
| Engine-speed meas. | 18 |
| Engine-tweaking services | 24 |
| Engine-valve regulator | 22 |
| Engine: Abbr. | 13 |
| Engineer | 8 |
| Engineer Brian who published "Oblique Strategies" cards | 65 |
| Engineer Diesel | 15 |
| Engineer elected U.S. President | 31 |
| Engineer for whom a peak was named | 34 |
| Engineer for whom a St. Louis bridge was named | 46 |
| Engineer from Cambridge | 23 |
| Engineer in 2000 headlines | 26 |
| Engineer James Buchanan | 23 |
| Engineer Nikola | 15 |
| Engineer of the comics | 22 |
| Engineer Parsons | 16 |
| Engineer read its diatribes (7) | 31 |
| Engineer Sikorsky | 17 |
| Engineer Sikorsky and a hunchback | 33 |
| Engineer's apparel? | 23 |
| Engineer's beam | 19 |
| Engineer's calculation | 26 |
| Engineer's charge | 21 |
| Engineer's compartment | 26 |
| Engineer's computation | 26 |
| Engineer's concern | 22 |
| Engineer's deg. | 19 |
| Engineer's degree | 21 |
| Engineer's doc. | 19 |
| Engineer's downfall? | 24 |
| Engineer's favorite food? | 29 |
| Engineer's helper on a ship | 31 |
| Engineer's path | 19 |
| Engineer's place | 20 |
| Engineer's prop when designing the airport addition? | 56 |
| Engineer's remote-control circuit | 37 |
| Engineer's sch. | 19 |
| Engineer's school | 21 |
| Engineer's spot | 19 |
| Engineer's subj. | 20 |
| Engineer's symbol for efficiency | 36 |
| Engineer's workplace | 24 |
| Engineered offspring | 20 |
| Engineered simply | 17 |
| Engineering boondoggle | 22 |
| Engineering college designation | 31 |
| Engineering construction | 24 |
| Engineering deg. | 16 |
| Engineering degree | 18 |
| Engineering degrees | 19 |
| Engineering degs. | 17 |
| Engineering detail | 18 |
| Engineering details | 19 |
| Engineering details, informally | 31 |
| Engineering feat on a highway | 29 |
| Engineering marvel completed in 1914 | 36 |
| Engineering project | 19 |
| Engineering project begun in 1898 | 33 |
| Engineering ring | 16 |
| Engineering sch. | 16 |
| Engineering sch. in Troy, N.Y. | 30 |
| Engineering sch. in Troy, NY | 28 |
| Engineering sch. on the Hudson | 30 |
| Engineering school | 18 |
| Engineering school, for short | 29 |
| Engineering specialty: Abbr. | 28 |
| Engineering subj. | 17 |
| Engineering topic | 17 |
| Engineering unit | 16 |
| Engineers | 9 |
| Engineers org. | 14 |
| Engineers Without Borders corporate partner | 43 |
| Engineers' assoc. | 21 |
| Engineers' colleagues | 25 |
| Engineers' concerns | 23 |
| Engineers' gear, once | 25 |
| Engineers' org. | 19 |