a stiff, sharp-pointed, straight or curved woody projection on the stem or other part of a plant
a tropical African shrub or small tree with glossy leaves and thorns which grow in pairs, one of each pair being straight and the other curved
a thorny shrub popularly supposed to have formed Christ’s crown of thorns, in particular
a North American hawthorn that is often cultivated for its rich orange autumn foliage
a thorny tropical American tree of the pea family, grown as an ornamental
every apparently desirable situation has its share of trouble or difficulty
an African bush with hooked thorns that catch the clothing, in particular an acacia