Definition of tankette in US English:

tankette

noun

Military
historical
  • A small tracked vehicle resembling a tank, but typically without a turret and with lighter armour and weaponry, designed for reconnaissance or infantry support. Also more generally: any small tank or small vehicle resembling a tank.

Origin

Early 20th century; earliest use found in Recruiter's Bulletin. From tank + -ette.

Pronunciation

tankette

/taŋˈkɛt/