 |
| |||
| aperture; bay; eye; gap; gape; hole; leak; loophole; manhole; mouth; nozzle; opening; orifice; outlet; passage; perforation; rift; slit; vent; vent-hole | |||
| foramen | |||
| embouchure | |||
| port | |||
| fistula | |||
| porthole | |||
| slot | |||
| cleft; cutout; gash; inlet; lip; louver; pit-head; port (za paru, vazduh); rent; throat | |||
| |||
| mouth-piece | |||
| otvor: 244 phrases in 21 subjects |
| Anatomy | 2 |
| Clerical | 1 |
| Construction | 21 |
| General | 32 |
| Law | 6 |
| Mechanic engineering | 21 |
| Medical | 2 |
| Metallurgy | 2 |
| Microsoft | 6 |
| Military | 2 |
| Music | 1 |
| Nautical | 6 |
| Optics branch of physics | 3 |
| Ornithology | 1 |
| Photography | 74 |
| Road traffic | 2 |
| Road works | 1 |
| Slang | 4 |
| Technology | 51 |
| Textile industry | 1 |
| Zoology | 5 |