turtleback

tur·tle·back

T0426600 (tûr′tl-băk′)n. Something shaped like the back of a turtle, especially:a. Nautical An arched structure erected over the deck of a ship as protection from heavy seas.b. Archaeology A stone tool with a convex side.

tur′tle·back′, tur′tle·backed′ adj.

turtleback

(ˈtɜːtəlˌbæk) n1. (Nautical Terms) an arched projection over the upper deck of a ship at the bow and sometimes at the stern for protection in heavy seas2. (Archaeology) (now obsolete in archaeological usage) a crude convex stone axe

tor′toise-core`

n. Archaeol. a stone core of the Levalloisian tradition, having a rounded top and flattish bottom and prepared so as to permit a single flake to be struck from it. [1915–20]

单词	turtleback
释义	turtleback tur·tle·back T0426600 (tûr′tl-băk′)n. Something shaped like the back of a turtle, especially:a. Nautical An arched structure erected over the deck of a ship as protection from heavy seas.b. Archaeology A stone tool with a convex side. tur′tle·back′, tur′tle·backed′ adj. turtleback (ˈtɜːtəlˌbæk) n1. (Nautical Terms) an arched projection over the upper deck of a ship at the bow and sometimes at the stern for protection in heavy seas2. (Archaeology) (now obsolete in archaeological usage) a crude convex stone axe tor′toise-core` n. Archaeol. a stone core of the Levalloisian tradition, having a rounded top and flattish bottom and prepared so as to permit a single flake to be struck from it. [1915–20] EncyclopediaSeeturtler
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