bold, brave, chivalrous, courageous, dauntless, defiant, fearless, gallant, hardy, heroic, intrepid, stalwart, stouthearted, unafraid, undaunted ...
Definition of dactylozooid : A kind of zooid of Siphonophora which has an elongated or even vermiform body, with one tentacle, but no mouth. See Siphonophora.