几 a long narrow table

几, a pictographic character of a long narrow table, serves as a semantic as well as a phonetic component to form characters. 

In modern Chinese, 几 means:

1.how many
2.several; some
3.a small table; a teapoy

Characters formed by the semantic component 几

几 serves as a semantic component to express things related to a small table or extended meanings.

Characters formed by the phonetic component 几

Simplified: 机 肌 饥 矶 叽 讥 玑 jī
虮 麂 jǐ

Traditional: 機 肌 飢 磯 嘰 譏 璣 jī
蟣 麂 jǐ