Forms: 1 thistil, {th}istel , {th}ystel , 4-6 thistel, thystle, 5 thestel, thystelle, -tylle, 5-6 thistell, thystell, 6 thystel, thistyll, thessel, 7 thissel, 5- thistle. {beta} . (chiefly Sc.) 5 thristelle, 5-7 thrissill(e, 6 thirsill, thyrsill, 6-9 thrissel, thrisle, 8-9 thrissle, 9 thristle. {gamma} . 9 dial. fissle, fistle. [OE. {th}istil , -el m. = OHG. distil masc., distila fem. (MHG. distel m., f., Ger. distel f.), Du. distel, ON. {th}istell , -ill m. (Sw. tistel, Da. tidsel). Modern dialects... read more