logjam (n.)
- afterthought
- backstop
- bank
- bar
- barrage
- barrier
- bind
- block
- blockage
- boom
- breakwater
- breastwork
- buffer
- bulkhead
- bulwark
- cofferdam
- dam
- defense
- delay
- detention
- dike
- ditch
- earthwork
- embankment
- fence
- gate
- groin
- halt
- hang-up
- hindrance
- holdup
- interim
- jam
- jetty
- lag
- lagging
- levee
- milldam
- moat
- mole
- moratorium
- mound
- obstruction
- parapet
- pause
- portcullis
- rampart
- reprieve
- respite
- retardation
- roadblock
- seawall
- slowdown
- slowness
- stay
- stop
- stoppage
- suspension
- tie-up
- wait
- wall
- weir
- work