(rail transport) Synonym of signal box

Any of various aquatic plants of the genus Pistia.

A floating aquatic plant, Pistia stratioides, with green rosettes of leaves and inconspicuous flowers. / Samolus valerandi, a species of water pimpernel.

plural of crossover cable

(rail transport, British spelling) A rail safety system installed in the driving cab of a train, which gives information to the train driver on track status and condition.

(computing) A tag or value included in a request (such as a URL) purely to differentiate it from previous requests and thus avoid receiving a cached response.

plural of cache buster

(government, often capitalised) A government committee formed in wartime to coordinate the war effort.

(rugby, slang) Twickenham Stadium, England.

Synonym of Brussels sprout.