saɪ v. & n. --v. 1 intr.
emit a long
deep audible breath expressive of sadness, weariness,
longing,
relief, etc. 2 intr. (foll. by for)
yearn for (a
lost person or thing). 3 tr. utter or express
with sighs ('Never!' he sighed). 4 intr. (of
the wind etc.)
make a
sound like sighing. --n. 1 the
act or an
instance of sighing. 2 a sound
made in sighing (a sigh of relief). [ME sihen
etc., prob. back-form. f. sihte
past of sihen f. OE sican]