堰堤[entei] dam
可動堰[kadouzeki] canal gates
堰き止める[sekitomeru] to dam up
堰く[seku] to dam (up) (stream)
井堰[iseki] dam

堰き止湖[sekitomeko] dammed lake (formed by natural damming of a river, esp. by landslide, volcanic eruption, etc.)
堰板[sekiita] sheeting
堰を切ったよう[sekiwokittayou] gushing forth
堰を切る[sekiwokiru] to break a dam and gush forth
堰塞[ensoku] damming (e.g. a pond)

右折禁止[usetsukinshi] No Right Turn!
運転停止[untenteishi] suspension of operations
化学兵器禁止条約[kagakuheikikinshijouyaku] chemical weapons ban treaty
核抑止力[kakuyokushiryoku] nuclear deterrent force
鎌止め[kamadome] cutting grass and trees is prohibited

客止め[kyakudome] draw a full house
休止[kyuushi] pause
休止符[kyuushifu] rest (music)
挙止[kyoshi] bearing
禁止[kinshi] prohibition

火口湖[kakouko] crater lake
湖沼[koshou] lakes and marshes
湖上[kojou] on the lake
湖水[kosui] lake
湖畔[kohan] lake shore

湖面[komen] lake surface
江湖[kouko] the public
人造湖[jinzouko] artificial lake
中禅寺湖[chuuzenjiko] Lake Chuzenji