guy 1 (gī) n. A rope, cord, or cable used to steady, guide, or secure something. tr.v. guyed, guy·ing, guys To steady, guide, or secure with a rope, cord, or cable. [Partly from Middle English gie, guide, guy (from Old French guie, from guier, to guide; see weid- in Indo-European roots) and partly from Low German; akin to Dutch gei, brail.] guy 2 (gī …