The word "glom" has a few different meanings, depending on the context. Here are some common definitions:
To take or steal something, especially in a sneaky or underhanded way. For example, "He tried to glom some money from his roommate's wallet while he wasn't looking."
To stick or adhere to something. For example, "The wet leaves glommed onto the bottom of her shoes."
To join or become closely associated with someone or something. For example, "He tried to glom onto the popular crowd at school."
(In slang) To understand or comprehend something. For example, "I don't really glom the rules of this game yet."
Note that the word "glom" is informal and not typically used in formal or academic writing.