Brazilian Wandering Spider (OurBreathingPlanet/Flickr). The Brazilian Wandering spider isnât the worldâs biggest spider with itâs 5.9-inch leg span, but it does have one of the deadliest venoms. This spiderâs venom rarely kills humans, but its bite will make you writhe in pain.
Lock definition, a device for securing a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a key, dial, etc. 2. a contrivance for fastening or securing something. 3. the mechanism that explodes the charge; gunlock. safety (def 4).
A master keyed lock system is one in which locks are designed not only to be opened by their individual keys, but also by special master keys that open some or all other locks in the system.