Without a visible hammer; -- said of a gun having a cock or striker concealed from sight, and out of the way of an accidental touch.(adjective)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "hammer-less" in a sentence
"He took out a pistol and glanced at it. .38 hammer-less."
"A doubtful bag doesn't matter -- it's a new country and I feel as keen as a cockney on his first 12th -- so I unpack my American automatic five shooter, beside which all last year's single-trigger double-barrel hammer-less ejectors are as flintlocks!"
"I've been to a few guns show lately and have looked a titanium hammer-less Taurus."