1. underpush - Noun
2. underpush - Verb
A push of the lower part of an object, generating a turning force.
An insufficient push.
(skating) A movement of the trailing leg laterally under the body, generating momentum.
underpush (third-person singular simple present underpushes, present participle underpushing, simple past and past participle underpushed)
To push too little. (Can we add an example for this sense?)