retention tank en · NOUN
Meanings
-
A tank for the retention of toilet waste, e.g. on a train.
Eleven four-coach 'Castles' are on order, with eight delivered. These are former GWR Mk 3s that have been converted by fitting sliding doors, passenger information screens and retention tanks.
2020 January 2, “Fleet News”, in Rail, page 20:
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| retention tanks | Number=Plur | lexicographic |