head bulb

head bulb

[′hed ‚bəlb]
(invertebrate zoology)
A structure armed with spines behind the lips of spiruroid nematodes.
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References in periodicals archive ?
Peralta's film--probably wisely--doesn't go there, contenting itself with brief encomiums from two punk sages: Henry Rollins, ranting amiably in broad daylight, and Fugazi's Ian MacKaye, whose monkish head bulbs solemnly out of a reverently darkened background.