smidge, smidgen
Cherry
Having a small amount of something is called "scarce" or "limited."
A small amount of smoke is often referred to as a whiff or a wisp.
A small amount of liquid is typically referred to as a "drop" or a "drip."
A pat of butter.
small
A small amount of solute in solvent is called a dilute solution. This means the concentration of the solute is low compared to the amount of solvent.
A small songbird that begins with the letter o is an ortolan.
kite
Jot
Measure.
iota