Smaller than normal, undersized. / Smaller than appropriate, expected or sufficient. / Small enough to fit through a screen.

below the usual or expected size

Having too few seats.

Third-person singular simple present indicative form of underseal

plural of underseal

A thick, resilient coating applied to the underbody or chassis of an automobile to protect against damage from small stones, etc, which would rapidly chip ordinary paint and allowing rusting to begin.

(transitive) To coat (the underbody or chassis of a vehicle) with underseal.

simple past tense and past participle of underseal

present participle of underseal

simple past tense and past participle of undersend