[f. THORN sb. + -LET.] a. A diminutive thorn-bush. b. A minute thorn.
1865. E. Burritt, Walk Lands End, xii. 419. The Rifle Corps fired a volley over the consecrated thornlet.
1882. Sladen, in Jrnl. Linn. Soc., XVI. 201. The spinelets
appear like well-developed thornlets.