rictuses

n.

露齿裂嘴，嘴裂( rictus的名词复数 )；

1. His mouth is gaping in a kind of rictus of startled alarm.
   由于受到惊吓，他张着嘴，一句话也说不出来。
2. His face was set in a rictus of death that was somewhat like a smile.
   他的面容带着亡故后的张嘴结舌，有点像在微笑。

Dominic West & Lucy Parham
Taken for a 28M Pounds Sterling Ride
Bioenergetics of Breeding Northern Shovelers: Diet, Nutrient Reserves, Clutch Size, and Incubation
Isoenzyme variation in the grass genus Elymus (Poaceae)
Lizards of the Genus Tropidurus (Iguania: Tropiduridae) from the Serranía de Huanchaca, Bolivia: New Species, Natural History, and ...
[Incidence of strokes in Spain. Methodological foundations of the Iberictus study].
Stroke and Transient Ischemic Attack Incidence Rate in Spain: The IBERICTUS Study
Diversity patterns along and across the Chilean margin: a continental slope encompassing oxygen gradients and methane seep benthic h...
Effects of amino-terminal extensions and specific mutations on the activity of restrictocin.
Influence of culture conditions on production of flavour compounds by 29 ligninolytic Basidiomycetes