A rope, cord, or cable used to steady, guide, or secure something.
TRANSITIVE VERB:
Inflected forms: guyed, guy·ing, guys To steady, guide, or secure with a rope, cord, or cable.
ETYMOLOGY:
Partly from Middle English gie, guide, guy (from Old French guie, from guier, to guide; see weid- in Appendix I)and partly from Low German; akin to Dutch gei, brail.