gill

noun 0.759

slit

noun 0.725

slit trench

noun 0.616

slitting

noun 0.610

gillie

noun 0.570

gillnet

noun 0.570

slitter

noun 0.564

glottis

noun 0.563

gullet

noun 0.561

spiracle

noun 0.547

air hole

noun 0.534

glottal

noun 0.529

gunnel

noun 0.526

sulcus

noun 0.523

branchial arch

noun 0.520

gully

noun 0.515

slat

noun 0.514

gulper

noun 0.511

gutter

noun 0.506

sluice

noun 0.506

blowhole

noun 0.504

fissure

noun 0.504

grilse

noun 0.502

salt gland

noun 0.501