(historical) A carter's assistant.

past participle of fall under

(military) Equipped with weapons (of a country, army etc.); in a state of armed, military readiness.

to get past an obstruction by going underneath, although with difficulty:

Alternative form of underboob

(circus) One who is at the base of a formation of acrobats in a performance, as of a human pyramid.

To the leeward.

under one's breath; spoken very softly

To subdue.

Synonym of under the microscope