hermit crab hermit crab /ˈhɜːrmɪt kræb/

noun

1. Small soft-bodied marine crustaceans living in cast-off shells of gastropods  ( hermit crab )
   small soft-bodied marine crustaceans living in cast-off shells of gastropods
    The hermit crab found a new shell to call its home on the beach.
   The hermit crab found a new shell to call its home on the beach.
   
   

 backspace backspace /ˈbækˌspeɪs/

noun

1. The typewriter key used for back spacing  ( backspace , backspace key , backspacer )
   the typewriter key used for back spacing
   
   

verb

1. Hit the backspace key on a computer or typewriter keyboard  ( backspace )
   hit the backspace key on a computer or typewriter keyboard
    To erase, you must backspace
   To erase, you must backspace
   

 pronghorn pronghorn /ˈprɔŋˌhɔrn/

noun

1. Fleet antelope-like ruminant of western North American plains with small branched horns  ( American antelope , Antilocapra americana , prongbuck , pronghorn , pronghorn antelope )
   fleet antelope-like ruminant of western North American plains with small branched horns
   
   

 Symphalangus syndactylus Symphalangus syndactylus /sɪmfəˈlæŋɡəs sɪnˈdæktɪləs/

noun

1. Large black gibbon of Sumatra having the 2nd and 3rd toes partially united by a web  ( Hylobates syndactylus , siamang , Symphalangus syndactylus )
   large black gibbon of Sumatra having the 2nd and 3rd toes partially united by a web