Definition of petty captain in English:

petty captain

noun

historical
  • An officer ranking next below a captain; a lieutenant. Also (with reference to other military cultures): an officer of comparable minor rank or status.

Origin

Late 15th century; earliest use found in Gregory's Chronicle. From petty + captain.

Pronunciation

petty captain

/ˌpɛtɪ ˈkapt(ɪ)n/