GCA

1. Ground control (or controlled) approach system, or ground control apparatus (aeronautics)
2. Guatemala, Central America (IVR)

• tightest
• tight-fisted
• tight-head prop
• tight-head props
• tightish
• tightishly
• tight junction
• tight junctions
• tight-knit
• tight-lace
• tight-laced
• tight-lacer
• tight-lacers
• tight-laces
• tight-lacing
• tight-lipped
• tightly
• tightly-knit
• tightness
• tightnesses
• tightrope
• tightropes
• tights
• tight spot
• tightwad