n. chain gang
chain letter
chain link fence
chain mail
chain of command
chain pickerel
chain reaction
chain react
chain rule
chain saw
chain smoke
chain smoker
chain stitch
chain store
choke chain
daisy chain
food chain
Gunter's chain
heavy chain
light chain
long chain
Markov chain
Markoff chain
open chain
polymerase chain reaction
side chain
straight chain
Pennine Chain