humming vs queep

humming

• Making a hum sound. 

• The sound of something that hums; a hum. 

queep

• Non-flying duties, typically paperwork, that are undesirable to pilots. 

• A rowing event, with two scullers and two sweepers per shell. 

• The sound a bird may make, similar to peep, chirp, cheep. 

• The sound a machine may make, similar to beep. See pocketa-queep. 

• To emit a "queep" sound.