Green’s Dictionary of Slang

clydesdale n.

[? the solid dependability of the Clydesdale horse or the attractiveness of the Clydesdale terrier]

(US) an attractive man.

(con. 1980s) i80s.com 🌐 clydesdale Big, all-American boy. Meant as a word of praise. Usually used by mid-80’s preppy girls.