What does "capful" mean?

The amount that will fit into a cap.

What is a synonym for "capful"?

Common synonyms include: dollop, little quantity, quantity, small amount, volume.

/ˈkæpfʊl/ noun

noun ·Rare ·Advanced level

Noun

1
The amount that will fit into a cap.
2
the quantity that a cap will hold wordnet
3
A light puff of wind.
""I warrant you were frighted, wer'n't you, last night, when it blew but a capful of wind?""

""I warrant you were frighted, wer'n't you, last night, when it blew but a capful of wind?""

From cap + -ful.