Mukula means a Bud. When all the five finger are brought together and touch each other at the tip, we get the Mukula hasta.

Lets see what the viniyaga shloka has to say :
kumude bhojane panchabane mudradidharane
nabhao cha kadalipushpe yujyate mukulah karaha
This sloka talks about the various uses of Mukula. It can denote the following :

A [...]