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.
Almost all spiders are venomous. That's how they hunt. Most spiders are too small, or their venom too weak, to be dangerous to humans. Some spiders are pretty well-known, and seem to get blamed for most of the spider bites out there. In the United States, black widow spiders are often considered the most venomous.