shuǐ​mén

sluice gate

水门 (水門) shuǐ​mén
sluice gate noun
water valve or sluice gate used to regulate the flow of water

The engineer is checking if the reservoir's floodgates are operating correctly.

water salute noun
ceremonial greeting for an aircraft using water cannons to create an arch

The inaugural flight passed through a spectacular water salute after landing.

Frequency

Movie subtitles
1.94 per million appears in 1% of films
Written text
0.739 per million

Sources

Definitions
CC-CEDICT