thorn; spine; splinter (esp. lodged in one's flesh); hard sharp item (esp. lodged in one's throat, e.g. fish bone); biting words
wild rose; bramble; briar patch; obstacle; source of difficulty
briars; thicket; the bush
thorny shrub; wild rose; briar; thorn; cusp
poisonous spine; venomous spine
there is no rose without a thorn; every rose has its thorn
stickleback (Gasterosteidae spp.)
Echinodermata (phylum of marine invertebrates)
briars; thicket; the bush
acanthodians (extinct jawed fishes)
spinocellular carcinoma; squamous-cell carcinoma; prickle cell carcinoma
Ryukyu spiny rat (Tokudaia osimensis)
threadfin butterflyfish (Chaetodon auriga, species of the Indo-Pacific)
threadfin butterflyfish (Chaetodon auriga, species of the Indo-Pacific)
ridge-tailed monitor (Varanus acanthurus, species of monitor lizard found throughout the arid northern regions of Australia); spiny-tailed monitor
black-headed monitor (Varanus tristis, small species of carnivorous monitor lizard native to Australia); freckled monitor
Muennink's spiny rat (Tokudaia muenninki); Okinawa spinous country-rat
sand sifting starfish (Astropecten polyacanthus); comb star