sakaṇṭaka : [adj.] thorny.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Sakaṇṭaka (adj.) [sa+kaṇṭaka] thorny, dangerous D i.135; Th 2, 352; DA i.296.

Pali-English Dictionary, TW Rhys Davids, William Stede,

○kaṇṭaka mf(ā)n. having thorns, thorny, prickly, Cān
• troublesome, perilous W
• having the hairs of the body erected, thrilled with joy or desire Kathās
• having pointed splinters MBh. (vḷ.)
• accompanied with bones (said of fish) Pat
• m. Guilandina Bonduc L
• Blyxa Octandra L

Sanskrit-English Dictionary, by M. Monier William