1palm 
/ˈpɑ:m/ noun
plural palms /ˈpɑ:m/ noun [count] : the inside part of the hand between the wrist and the fingers
▪ He placed a coin in the child's outstretched palm. ▪ The kitten was small enough to fit in the palm of my hand. ▪ He claimed that he could read my palm. [=look at the lines on the palm of my hand and tell me what was going to happen to me in the future] — see picture at hand
▪ He placed a coin in the child's outstretched palm. ▪ The kitten was small enough to fit in the palm of my hand. ▪ He claimed that he could read my palm. [=look at the lines on the palm of my hand and tell me what was going to happen to me in the future] — see picture at hand
grease the palm of — see 2grease
have someone in the palm of your hand
: to have control or influence over someone : to be able to control someone easily
▪ She has her boss in the palm of her hand.
▪ She has her boss in the palm of her hand.
— compare 2palm
