What is the meaning of Bilin?

Any of various biological pigments formed in many organisms as a metabolic product of certain porphyrins.

remainder

order, command

counsel; advice; instruction

superessive singular of bili

definite nominative plural of bil

definite accusative plural of bil

errand; something asked to be done

command; order

directions; instructions

request; message

counsel; advice

last will and testament

something left in another's charge

nonstandard form of bilhin

Source: wiktionary.org