blackjack

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun 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
noun a piece of metal covered by leather with a flexible handle; used for hitting people
noun a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship

From black + jack.

=garrotazo=, m., blow with a cudgel or blackjack. — The Spanish American Reader, Ernesto Nelson
Besides there's a blackjack game going on and I'm losing money every minute I'm out of it." — Astounding Stories, June, 1931, Various
They made a splendid but [v]ineffectual burst of speed, for when "Old Sandy" found himself upon the blackjack hills he was foot-loose. — The Literary World Seventh Reader, Unknown

blackjack oak, jack oak, Quercus marilandica

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