Ron Weasley's greatest fear (7)

I believe the answer is:

spiders

(Other definitions for spiders that I've seen before include "14 [BOWIE] 's band from 26 [MARS]" , "Insects; rests" , "Arachnids" , "Predators on the web" , "Web weavers" .)

I've seen this clue in The Wall Street Journal.

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