Thorn

oas

(sharp protective structure of a plant)

oka

(sharp protective structure of a plant)

ora

(sharp protective structure of a plant)

ota

(sharp protective structure of a plant)

piikki

(sharp protective structure of a plant)

piikki

(figuratively: that which pricks)

piikkipensas

(any shrub or small tree that bears thorns)

thorn

(letter of the Latin alphabet (Þ, þ))