1. (idiomatic) in a dangerous, hazardous, or delicate situation; at risk

Encyclopedia: On thin ice

• crossheading
• crossing
• crossing guard
• crossing over
• crossjack
• crosslet
• crossly
• crossness
• crossopterygian
• Crossopterygii
• crossover
• crossover voter
• crosspatch
• crosspiece
• crossroad
• crossroads
• crossruff
• crosstalk
• crosstie
• crosstown
• crosswalk
• crossway
• crossways
• crosswind
• crosswise