"pipes" in the noun sense
1. pipe, tobacco pipe
a tube with a small bowl at one end used for smoking tobacco
2. pipe, pipage, piping
a long tube made of metal or plastic that is used to carry water or oil or gas etc.
3. pipe, tube
a hollow cylindrical shape
4. pipe
a tubular wind instrument
5. organ pipe, pipe, pipework
the flues and stops on a pipe organ
"pipes" in the verb sense
1. shriek, shrill, pipe up, pipe
utter a shrill cry
2. pipe
transport by pipeline
"pipe oil, water, and gas into the desert"
3. pipe
play on a pipe
"pipe a tune"
4. pipe
trim with piping
"pipe the skirt"
Source: WordNet® (An amazing lexical database of English)
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