excess-oil return line

hydrogen gas return line

non return valve

Return line

return valve

steam return line

A line used as both sterile and maintaining line

agonic line {agonic line of no declination}

Dual purpose line with nucleic male sterile line

Fault Cutoff Line Allan Line

Male sterility line and maintainer line

velocity line of arc line short band

pressure reducing valve reducing valve

valve disc type breath valve

a point of no return

a point of safe return

A Return of Order(and discipline) in Architectural Design

a return to cultural roots

a tax return

abnormal excess return