275 口+欠【qiàn】=吹【chuī】（会意）

欠，打哈欠

yawn

①吹气<v.>blow; exhale

②※吹奏<v.>play (wind instruments)

※吹笛【chuīdí】play the flute

③※夸口<v.>brag; boast

※吹牛【chuīniú】boast; brag; talk big

④※破裂<v.>break off; break up; fall through

※吹台【chuītái】<informal>break off; fallthrough; fizzle out