A subjective disturbance of hearing in which a sound heard appears to be repeated.

Bulk advertising sent through the post/mail.

(obsolete, medicine) Hypochondriac (related to or affected by hypochondria). / (obsolete, anatomy) Hypochondriac (related to or located in the hypochondrium).

The time when light first appears in the morning; dawn, especially the start of dawn. / (astronomy) The first use of a telescope or other instrument to capture an astronomical image.