A type of mechanical seal that provides a tortuous path to help prevent leakage.

plural of labour union

UK spelling of back labor

Intense pain in one's back while in labor (giving birth).

plural of Labrador duck

Camptorhynchus labradorius, an extinct sea duck that was never common, believed to be the first bird to become extinct in North America after 1500.

One who performs manual labor

(grammar) A transitive verb, such as break, burn, boil, open, start, change, or assimilate, which may be used intransitively with the object of the action as the subject.

An aqueous solution of sodium hypochlorite, used as a disinfectant.

Work which one is compelled to perform due to lack of options, by choice while in prison, or outright against one's will, while in a condition of confinement or slavery.