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| shaft sump | |||
| swamp A permanently waterlogged area in which there is often associated tree growth, e.g. mangroves in hot climates; marshland | |||
| bog; marsh; swamp; peat bog | |||
| slough | |||
| heel | |||
| sump: 11 phrases in 4 subjects |
| Botany | 7 |
| General | 1 |
| Life sciences | 2 |
| Mechanic engineering | 1 |