black widow, Latrodectus mactans
['sloth bear, Melursus ursinus, Ursus ursinus', 'tennis ball', 'window screen', 'great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias', 'quill, quill pen', 'cello, violoncello', 'bow tie, bow-tie, bowtie']