What does the word frail mean?

Usage examples for frail

  1. Finally, after some minutes' wait, a frail, white- haired man in a little black cap- of- maintenance appeared in the screen. – Space Viking by Henry Beam Piper
  2. These refer to the man of bone and muscle, in the first case; to the physically frail or the fat man, in the second. – Analyzing Character by Katherine M. H. Blackford and Arthur Newcomb
  3. Frail excitement foreign to the tranquil pages could not be evaded. – My Tropic Isle by E J Banfield