Spiny

//ˈspaɪni// adj, noun

Definitions

Adjective
  1. 1
    Covered in spines or thorns.
  2. 2
    Troublesome; difficult or vexing.

    "The spiney desarts of scholastic philosophy"

  3. 3
    Like a spine in shape; slender.

    "And, as in well-growne woods, on trees, cold ſpinie Graſhoppers / Sit chirping, […]"

Adjective
  1. 1
    having or covered with protective barbs or quills or spines or thorns or setae etc. wordnet
  2. 2
    having spines wordnet
Noun
  1. 1
    Archaic form of spinney. alt-of, archaic

Etymology

From spine + -y.

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