招手 

Pinyin: zhāo shǒu 
Meaning：beckon  
Sentence：他打开了门，招手让我进去。He opened the door and motioned me to come in.

More: 

招： 

Pinyin: zhāo
Meaning: Provoke; to recruit
Radical: 扌
Stokes: 8
Traditional: 招
Common words/Phrase:
招生 [zhāo shēng] 【enroll new students】
招标 [zhāo biāo] 【invite public bidding】
招募 [zhāo mù] 【to recruit】
招待 [zhāo dài] 【reception】
招收 [zhāo shōu] 【hire】

手：

Pinyin: shǒu 
Meaning: A bunch of fives; fist; hand; manus; mauley; pud
Radical: 手 
Stokes: 4
Traditional: 手 
Common words/Phrase: 
手术 [shǒu shù] 【operation; surgery】
手段 [shǒu duàn] 【method】
熟手 [shú shǒu] 【practised hand】
手册 [shǒu cè] 【manual】
手续 [shǒu xù] 【formalities】