crevasse /kri-vasˈ/

1. A crack or split, esp applied to a cleft in a glacier
2. A fissure in a river embankment (US)

To make a fissure in (a dyke, etc)

• instill
• instillation
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• instilment
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• instinct
• instinctive
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• instinctivities
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• in stitches
• institorial
• institute
• instituted
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• instituting