1. [n]  the product of filtration; a gas or liquid that has been passed through a filter
2. [v]  remove by passing through a filter; "filter out the impurities"

FILTRATE is a 8 letter word that starts with F.

1. \Fil"trate\, v. t. [imp. & p. p. {Filtrated}; p. pr. &
   vb. n. {Filtrating}. ] [Cf. LL. filtrare. See {Filter}.]
   To filter; to defecate; as liquid, by straining or
   percolation. --Arbuthnot.
   
   

2. \Fil"trate\, n.
   That which has been filtered; the liquid which has passed
   through the filter in the process of filtration.