1. Depend on a small thing or be at risk
   - hang by a thread

Type of: depend

• head nurse
• head of hair
• head of household
• head of state
• head off
• head over heels
• head register
• head restraint
• head rhyme
• head sea
• head shop
• head smut
• head start
• head teacher
• head tone
• head trip
• head up
• head voice
• head-in-the-clouds
• head-on
• head-shrinker
• head-to-head
• head-up display
• headache
• headache powder