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

Encyclopedia: On thin ice

• genus Vernonia
• genus Veronica
• genus Verticillium
• genus Vesicaria
• genus Vespa
• genus Vespertilio
• genus Vespula
• genus Vibrio
• genus Viburnum
• genus Vicia
• genus Vicugna
• genus Vidua
• genus Vigna
• genus Viminaria
• genus Vinca
• genus Vincetoxicum
• genus Viola
• genus Vipera
• genus Vireo
• genus Virgilia
• genus Viscum
• genus Vitis
• genus Vittaria
• genus Viverra
• genus Viverricula