hollow+shape
21found — 1 the past tense and past participle of find 1 2 verb (T) 1 to start something such as an organization, company, or city: Founded in 1935 in Ohio, Alcoholics Anonymous is now a world wide organization. 2 to start something such as a school or… …
22core — [1] When referring to casting a sand unit placed inside of a mold so that when the metal is poured, the core will leave a hollow shape. [2] The magnetic center of a coil usually made of iron. [3] The primary part (engine block, alternator,… …
23Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
24arts, East Asian — Introduction music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature. Some studies of East Asia… …
25Bullet — This article is about firearms projectiles. For other uses, see Bullet (disambiguation). Lead soft point, boat tailed, copper jacketed bullets A bullet is a projectile propelled by a firearm, sling, or air gun. Bullets do not normally contain… …
26metalwork — metalworker, n. /met l werrk /, n. objects made of metal. [1840 50; METAL + WORK] * * * Useful and decorative objects fashioned of various metals. The oldest technique is hammering. After с 2500 BC, casting was also used, molten metal being… …
27Surfboard — For other meanings see Surfboard (disambiguation). A stack of boards in Waikiki during a surf competition …
28Electric guitar — Fender Stratocaster String instrument Classification String instrument (plucked, either by fingerpicking, or with a pick.) …
29Egyptian Arabic — Masri redirects here. For other uses, see Masri (disambiguation). Egyptian Arabic اللغة المصرية العامية Pronunciation [elˈloɣæ l.mɑsˤˈɾejjɑ l.ʕæmˈmejjæ] Spoken in Egypt …
30building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
