worm  n. 虫, 蠕虫
      v. 蠕动, 驱虫, 慢慢探听出
      n. 可鄙之人, [计]蠕虫病毒, 螺纹 

难词解码：与字母m或w有关的很多单词有“水；潮湿；弯曲；草”的含义，即都由字母m,w象“水漂流；弯曲；风吹动杂草”的形状演化而来。worm  n.虫，蠕虫  ←身体一直在不断弯曲的虫子。

They wormed their way out through the crack in the wall.他们好不容易才从墙上的裂缝处爬了出来。

词形变化
动词第三人称单数: worms

词义辨析
bug, insect, pest, worm
这些名词均含“虫，昆虫”之意。
bug: 指小昆虫，尤指吸血的臭虫，也可指细菌。
insect: 含义广泛，多指蚂蚁、黄蜂、蝉等等。
pest: 指有害的昆虫或有害的小动物。
worm: 侧重指蚯蚓、蚕、毛虫等小而无骨的虫。

英英解释
名词 worm:
any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae
a person who has a nasty or unethical character undeserving of respect同义词：louse, insect, dirt ball
a software program capable of reproducing itself that can spread from one computer to the next over a network
screw thread on a gear with the teeth of a worm wheel or rack
动词 worm:
to move in a twisting or contorted motion, (especially when struggling)同义词：writhe, wrestle, wriggle, squirm, twist

moss  n. 苔藓, (苏格兰)泥沼
      vt. 使 ... 长满苔藓

难词解码：与字母m或w有关的很多单词有“水；潮湿；弯曲；草”的含义，即都由字母m,w象“水漂流；弯曲；风吹动杂草”的形状演化而来。moss  n.藓类植物,苔藓 ←潮湿的地方生长出来的植物

Moss affects the northern slopes.朝北的山坡易生苔。

词形变化
动词第三人称单数: mosses

英英解释
名词 moss:
tiny leafy-stemmed flowerless plants