A series of conditions that can lead to a person being drowned: lack of education (about water safety or local conditions), lack of safety advice, lack of protection (such as a flotation device), lack of supervision, and inability to cope (e.g. a weak swimmer in strong currents).

Woodwardia, native to the Northern Hemisphere. / Tmesipteris, native to the South Pacific

A dog collar designed to pinch or squeeze the dog or other animal when the leash is pulled.

plural of supply chain

plural of Markov chain

plural of choke chain

(military) The command hierarchy or structure in which one rank obeys the one above it, which obeys the one above it, and so forth.

Alternative form of choke chain

(architecture) A tie consisting of a series of connected iron bars or rods.

plural of paper chain