1. diaphragm - Noun
2. diaphragm - Verb
A dividing membrane or thin partition, commonly with an opening through it.
The muscular and tendinous partition separating the cavity of the chest from that of the abdomen; the midriff.
A calcareous plate which divides the cavity of certain shells into two parts.
A plate with an opening, which is generally circular, used in instruments to cut off marginal portions of a beam of light, as at the focus of a telescope.
A partition in any compartment, for various purposes.
Source: Webster's dictionaryA concave chest means that your diaphragm is sagging. Gene Tunney
I'm engaging my diaphragm as I'm speaking to you right now. Lesley Garrett
Rufus because my diaphragm gets a workout while trying to utilize the 18 vocal sounds a mole makes. Chuckie because [...] he's an asthmatic with five personalities rolled into one-plus I have to do the voice the way [Christine Cavanaugh] did it for 10 years. Nancy Cartwright
Poetry is the most bodliy of arts, the medium of poetry is the column of breath rising from the diaphragm in the individual's chest to be shaped into meaning sounds inside the mouth of whoever undertakes to say the poem. Robert Pinsky
Rap is hardcore street music but there are women out there who can hang with the best male rappers. What holds us back is that girls tend to rap in these high, squeaky voices. It's irritating. You've gotta rap from the diaphragm. Cheryl James
To sing in a lower key is harder work. You have to use your diaphragm more. Eric Clapton