Noun
tach (plural tachs)
(informal) Clipping of tachometer.
tach (plural taches)
(obsolete, costermongers) A hat.
tach (uncountable)
(medicine, colloquial) Tachycardia.
wide-complex tach
V-tach
Not only does Tach spout foul racist things, he also has a low opinion of women—his most bombastic and ridiculous statements concern them. Source: Internet
Considering this, we run the HD Tach full benchmark several times to fill the drive before testing. Source: Internet