No definitions found for 'output tube'
Perhaps one of these:
out of the woods,
out of the common,
outofdoors,
out of touch,
outpatient,
out of it,
outfoot,
outfitted,
outfeat,
out-of-date,
out of battery,
out of the way,
outbidder,
outfitting,
output program,
output device,
out of doors,
outbowed,
outfitter,
out-of-body experience,
outbade,
out of doubt,
outbid,
output contract,
out of time,
outbidding,
out-patient,
otopathy,
out of true,
outbidden,
output,
outfit,
out of this world,
out of the blue,
out patient,
out of door,
out-of-town,
output signal,
out of date,
out-of-the-box thinking,
output routine,
output file,
out-of-the-way,
out-of-the-ordinary,
outvote,
outbud,
output-to-input ratio,
out of the running,
out of twist,
out of wedlock,
out of the ordinary,
out of temper,
out of the question,
out of thin air,
out-of-doors,
out-of-door