opisthotonos opisthotonos /oʊˈpɪsθəˌtoʊnɒs/

noun

1. Severe spasm in which the back arches and the head bends back and heels flex toward the back  ( opisthotonos )
   severe spasm in which the back arches and the head bends back and heels flex toward the back
    The patient displayed symptoms of opisthotonos, causing great concern among the medical staff.
   The patient displayed symptoms of opisthotonos, causing great concern among the medical staff.
   
   

 xeroderma pigmentosum xeroderma pigmentosum /zɪrəˈdɝːmə pɪgmɛnˈtoʊsəm/

noun

1. A rare genetic condition characterized by an eruption of exposed skin occurring in childhood and photosensitivity with severe sunburn; inherited as a recessive autosomal trait in which DNA repair processes are defective so they are more likely to chromosome breaks and cancers when exposed to ultraviolet light  ( xeroderma pigmentosum )
   a rare genetic condition characterized by an eruption of exposed skin occurring in childhood and photosensitivity with severe sunburn; inherited as a recessive autosomal trait in which DNA repair processes are defective so they are more likely to chromosome breaks and cancers when exposed to ultraviolet light
    Patients with xeroderma pigmentosum must be extremely cautious about sun exposure.
   Patients with xeroderma pigmentosum must be extremely cautious about sun exposure.
   
   

 fullback fullback /ˈfʊlˌbæk/

noun

1. () (football) the running back who plays the fullback position on the offensive team  ( fullback )
   (football) the running back who plays the fullback position on the offensive team
    The fullback dashed through the defensive line, scoring a touchdown.
   The fullback dashed through the defensive line, scoring a touchdown.
   
   
2. (American football) an offensive position in the backfield  ( fullback )
   (American football) an offensive position in the backfield
   

verb

1. () (football) play the fullback  ( fullback )
   (football) play the fullback
   

 common chickweed common chickweed /ˈkɒmən ˈtʃɪkwiːd/

noun

1. A common low-growing annual garden weed with small white flowers; cosmopolitan; so-called because it is eaten by chickens  ( common chickweed , Stellaria media )
   a common low-growing annual garden weed with small white flowers; cosmopolitan; so-called because it is eaten by chickens