7 the operating mechanism, esp. in a piano, gun, watch, etc. 8 (of a guitar) the distance between the strings and the fingerboard. 9 (of keyboard instruments) the sensitivity of the keys to touch. 10 the force applied to a body. the reaction is equal and opposite to the action.
Quick Answer. The Hawaiian happy face spider, Theridion grallator, is not poisonous. While the arachnid belongs to the same family as the feared black widow, it lacks the toxic venom. The species is named for the array of color patterns across the abdomen, some of which resemble a smiling face. Continue Reading.
The world's most venomous spiders are the Brown Recluses and Funnel Web spiders. However, the Australian Redback spider is more venomous than the Australian funnel web spider (sometimes called the Sydney funnel web spider). The Brazilian Wandering Spider is also up with the most venomous spiders in the world.