Silk worker's rest on table (6)

I believe the answer is:

spider

I'm a little stuck... Click here to teach me more about this clue!

'rest on table' is the definition.
'spider' can be an answer for 'rest' (I've seen this before). I'm unsure of the 'on table' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for spider that I've seen before include "Creepy-crawly" , "Arachnid - snooker rest" , "Web expert?" , "Snooker equipment" , "A crawler" .)

I've seen this clue in The Telegraph.

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