jack oak

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves;
tends to form dense thickets
• Syn:
blackjack oak, blackjack, Quercus marilandica
• Hypernyms:
scrub oak
2. small to medium deciduous oak of east central North America;
leaves have sharply pointed lobes
• Syn:
northern pin oak, Quercus ellipsoidalis
• Hypernyms:
oak, oak tree