Listings in a daily planner: Abbr.

• Liability for a political candidate ... as depicted four times in this puzzle?
• Dates with dentists, e.g. (abbr.)
• Secretarial jottings: Abbr.
• Engagement calendar listings: Abbr.
• Datebook listings: Abbr.
• Cal. entries
• Some PDA entries
• Meetings entered in P.D.A.'s: Abbr.
• Datebook entries (abbr.)

Wiktionary Word definitions in Wiktionary
n. (plural of appt English)