noun which may take the genitive case particle 'no', noun
pea-sized; very small
Describes something about the size of a pea or bean; often used for small objects, swellings, or granular things.
Pea-sized hail started falling.
A pea-sized swelling appeared on my finger.
Compound of 豆粒 (まめつぶ, 'bean grain') and 大 (だい, 'size'). The reading だい is a common suffix for sizes.