棘 - thorn, splinter, spine

there is no rose without a thorn; every rose has its thorn

ridge-tailed monitor (Varanus acanthurus); spiny-tailed monitor

spinocellular carcinoma; squamous-cell carcinoma; prickle cell carcinoma

echinoderm

briars; thicket; the bush

sand sifting starfish (Astropecten polyacanthus); comb star

poisonous spine; venomous spine

infraspinatus muscle

stickleback (Gasterosteidae spp.)

scapular spine; spine of the scapula; spina scapulae

barbed wire

bone spur; osteophyte