thornlet|ˈθɔːnlɪt| [f. thorn n. + -let.] a. A diminutive thorn-bush. b. A minute thorn. 1865E. Burritt Walk Land's End xii. 419 The Rifle Corps fired a volley over the consecrated thornlet.1882Sladen in Jrnl.Linn.Soc. XVI. 201 The spinelets..appear like well-developed thornlets.