flatback

noun 0.622

shell

noun 0.619

cockleshell

noun 0.602

turtleback

noun 0.585

finback

noun 0.582

half shell

noun 0.579

sheller

noun 0.555

seashell

noun 0.551

whaleback

noun 0.550

shelling

noun 0.547

carapace

noun 0.537

softback

noun 0.536

inshell

noun 0.531

ringback

noun 0.526

shipboard

noun 0.523

shipworm

noun 0.523

eggshell

noun 0.522

hogback

noun 0.517

loggerhead

noun 0.516

snapback

noun 0.516

tortoise shell

noun 0.516

clamshell

noun 0.516

rockhead

noun 0.515

wingback

noun 0.514

switchback

noun 0.513

fireback

noun 0.512

back

noun 0.511

shack

noun 0.511

box turtle

noun 0.510

strongback

noun 0.510

linebacker

noun 0.509

leatherback

noun 0.509

touchback

noun 0.508

shucker

noun 0.507

spillback

noun 0.507

pushback

noun 0.507

backward

noun 0.505

shellfish

noun 0.504

shellfishing

noun 0.502

shorebird

noun 0.502