Nouns

(n)dam, dike, dykea barrier constructed to contain the flow of water or to keep out the sea
(n)decameter, dekameter, decametre, dekametre, dam, dkma metric unit of length equal to ten meters
(n)damfemale parent of an animal especially domestic livestock

Verbs

(v)dam, dam upobstruct with, or as if with, a dam“dam the gorges of the Yangtse River”