1. Erect perennial with stout stems and yellow-green flowers; southern Canada and southeastern United States
   - yellow giant hyssop

Type of: giant hyssop

• Sigmund Freud
• Sigmund Romberg
• sign
• sign away
• sign in
• sign industry
• sign language
• sign manual
• sign of the cross
• sign of the zodiac
• sign off
• sign on
• sign over
• sign painter
• sign up
• signage
• signal
• signal box
• signal caller
• signal detection
• signal fire
• signal flag
• signal level
• signal light
• signal tower