be bound by

[GoldfishLord]

content (v.)

​Sense connection of "contained" and "satisfied" probably is that the contented person's desires are bound by what he or she already has. Related: Contented; contenting.

(Retrieved from https://www.etymonline.com/word/content#etymonline_v_18273
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I'd like to know if "bound" is the past participle of the verb "bound" or the past participle of the verb "bind".

 

[jutfrank]

It's the third (past participle) form of 'bind'.

 

[5jj]

The third form of bound is bounded.

 

[Tdol]

And I am not sure how the verb bound would make anything meaningful.

 

[Tarheel]

I have trouble understanding that sentence, so I understand if you do.
:-?