1) DC Comics superhero 2) Huge viper 3) Top horticulturist 4) Tropical snake 1) Laura 
the longest venomous snake in the New World, found in scrublands and forests from the Amazon River basin north to Costa Rica. Three species of ... [1 related articles]
The bushmaster (Lachesis mutus) is a Central American poisonous snake of the pit viper family found from Costa Rica and Trinidad to eastern Brazil in humid forest regions. It has dark rhombi on a dull reddish or yellowish background and grows to almost four metres long. The bushmaster is unique among the American pit vipers in laying eggs.
Series of wheeled armoured vehicles [AU], Series of cannon [US]
Large snake Lachesis muta. It is a type of pit viper, and is related to the rattlesnakes. Up to 4 m/12 ft long, it is found in wooded areas of South and Central America, and is the largest venomous snake in the New World. When alarmed, it produces a noise by vibrating its tail among dry leaves
a pit viper, Lachesis muta, of tropical America, that grows to a length of 12 ft. (3.6 m).