Meanings

in a bad way

to assign a role to an actor

exciter tube

excitation (drive)

exciter (driver)

driven element (antenna)

kanji printed as ruby, usually to explain kana

choreographer

diaphragm (of a speaker, microphone, etc.)

vibrometer

oscillator

strikeout leader (in a given season)

postal transfer

relaxation oscillation

relaxation oscillation

to hold aloft (e.g. a sword)

issue date (e.g. of a promissory note)

behavior

Foucault's pendulum

plummet