to flush after
- phrasal verb
- The sign said, "Please flush after using."
Examples
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Don't forget to flush after you use the restroom.
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He was reminded to flush after using the toilet to avoid unpleasant odors.
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It is important to flush after using the toilet to maintain hygiene.
Synonyms
To clean something by running water through it
To make the toilet water move to carry away waste
Surface Forms
Morphology
The meaning is directly and compositionally derived from 'flush' (to clear or clean with water) combined with 'after' (subsequently), yielding the simple instruction 'flush afterwards' as in 'flush after using the toilet'. This is a common, literal verb + temporal adverb pattern that is cross-linguistically straightforward, so a B1 learner who knows the constituent words will readily understand it.
Etymology
The phrasal verb flush after comes from the simple image of pulling a handle so flush, a rush of water, happens after you use the toilet and washes everything away. So, flush after means 'send water through the toilet to clean it after using it'.