a coarse prickly European weed with spikes of blue flowers; naturalized in United States
the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic
- He is caught between the devil and the deep blue sea.
- If we pay the rent to the landlady, we won't have any money for food; we are between the devil and the deep blue sea.
- In daredevil car races, there are moments when the drivers place themselves between the devil and the deep blue sea, trying to take the lead.
- If she continues to live with a man she doesn't love for his money, the day will come when she will be utterly frustrated and between the devil and the deep blue sea.