GNU Collaborative International Dictionary of English

Found one definition

1.       
   { Hindermost, Hindmost  } , a. [The superlative of hind. See Hind, a.] [Cf. AS. hindema (akin to Goth. hindumists), a superlative from the same source as the comparative hinder. See Hinder, a., and cf. Aftermost.] Furthest in or toward the rear; last. “Rachel and Joseph hindermost.”  
   Gen. xxxiii. 2.
   
   1913 Webster