1. Close in space; within reach
   "the town is close at hand"
   - at hand 
2. Close in time; about to occur
   "some people believe the day of judgment is close at hand"
   - at hand, imminent, impendent, impending

See also: close

• airplay
• airport
• airport terminal
• airpost
• airs
• airscrew
• airship
• airsick
• airsickness
• airside
• airspace
• airspeed
• airstream
• airstrip
• airt
• airtight
• airtime
• airwave
• airway
• airwoman
• airworthiness
• airworthy
• airy
• airy-fairy
• aisle