(anatomy) The part of the respiratory tract consisting of the nose, oral cavity, pharynx and larynx.

(anatomy) The part of respiratory tract consisting of nose, oral cavity, pharynx. / (anatomy) The part of respiratory tract consisting of nose, oral cavity, pharynx and epiglottis.

plural of upper arm

to experience; to suffer. / to occur at some particular point in time. / to set upon; to attack suddenly

plural of upside-down cake

(automotive, cycling) A shift to a higher gear / A shift to a higher level, such as of frequency, growth, economic level, etc.

(automotive, cycling) To shift to a higher gear / (transitive) To shift to a higher level, such as of frequency, growth rate, economic level, etc.

To attack someone. / To begin an activity; to embark upon a course of action.

(humorous) One who does the washing up.

(government) The upper legislative house in a bicameral legislature; usually smaller and having more restricted power than the lower house.