Hermissenda crassicornis Hermissenda crassicornis /hɜːrmɪˈsɛndə kræsɪˈkɔːrnɪs/

noun

1. A kind of sea slug  ( Hermissenda crassicornis )
   a kind of sea slug
    The tide pool explorer was thrilled to spot the vibrant Hermissenda crassicornis among the rocks.
   The tide pool explorer was thrilled to spot the vibrant Hermissenda crassicornis among the rocks.
   
   

 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
   

 prong prong /ˈprɔŋ/

noun

1. A pointed projection  ( prong )
   a pointed projection
    The fork had three prongs, ideal for picking up pasta.
   The fork had three prongs, ideal for picking up pasta.
   
   

 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