thornless

1. Erect and almost thornless American hawthorn with somewhat pear-shaped berries.
   美洲的一种直立的几乎无刺的山楂，其浆果呈梨形。
2. Thornless tree yielding heavy wood.
   一种出产沉实木材的无刺的树。
3. Friendship is the only one thornless rose in the word.
   世上惟一无刺的一玫瑰，就是友情。
4. Small thornless tree or shrub of tropical America whose seed pods are a source of tannin.
   热带美洲一种小而无刺的树或灌木，其豆荚是丹宁的来源。
5. Rapid propagation of thornless blue Aloe by tissue culture
   无刺番麻组织培养快速繁殖种苗的研究
6. Study on Tissue Culture and Rapid Propagation of Thornless Red Raspberry Idaeus
   无刺红树莓组织培养快速繁殖技术研究

adj

1. lacking thorns

   Synonym:    spineless