cliff, drop, drop-off
['cairn, cairn terrier', 'snail', 'cleaver, meat cleaver, chopper', 'rule, ruler', 'common iguana, iguana, Iguana iguana', 'grey whale, gray whale, devilfish, Eschrichtius gibbosus, Eschrichtius robustus', 'American lobster, Northern lobster, Maine lobster, Homarus americanus']