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Rosinante
rosinweed
Roskilde
RoSPA
Ross River virus
Ross Sea
Ross seal
Rosslare
rostellum
roster
rösti
Rostock
Rostov
rostra
rostrum
Roswell
rosy
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rostellum
ros·tel·lum [ rò stélləm ] (plural ros·tel·la [ rò stéllə ])


noun 
Definition:
 
something shaped like beak: a part of an animal or plant that resembles a beak, e.g. the hooked projection from the head of a tapeworm
[Mid-18th century. < Latin, "small beak" < rostrum (see rostrum)]

ros·tel·lar adjective
ros·tel·late [ róstə làyt, ro stéllət ] adjective
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