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.
10 Most Poisonous Spiders on Earth. Brown recluse female, 10 â 11 mm, very poisonous. Whether crawling on eight legs along their webs or scurrying from their dens â ready to pounce and kill anything that they wish to eat â spiders can be the stuff of nightmares.