Entry 4 senses · 2 variants Webster, 1913 Thickset · Thick·set · IPA /ˈθɪkˌsɛt/ a. n. 01 a. Close planted; as, a thickset wood; a thickset hedge. 1. Close planted; as, a thickset wood; a thickset hedge. 2. Having a short, thick body; stout. 02 n. A close or thick hedge. 1. A close or thick hedge. 2. A stout, twilled cotton cloth; a fustian corduroy, or velveteen.