passing note

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Music A note that connects two consonant pitches by stepwise motion and usually occurs on a weak beat. Also called passing tone.

Century Dictionary and Cyclopedia

1. n. In music, an unessential or discordant tone melodically combined with harmonically essential tones, either between them or next above or below them. Such accessory tones are usually unaccented.

GNU Webster's 1913

1. adj. (Mus.) a character including a passing tone.

WordNet 3.0

1. n. a nonharmonic note inserted for transition between harmonic notes