airway (noun) air pipe: ventilating pipe
Sinonime: affirm,
announce,
argue,
attest, be a witness, bear out, bear witness, bespeak, betoken,
certify,
confirm,
corroborate, countersign, depone, depose,
endorse, give evidence, give testimony,
indicate, say under oath,
sign, stand for, subscribe, vouch for
Antonime: deny,
refute