低頭 is read as ていとう (teitou) and means low bow.
ていとう
teitou
ていとうへいしん
prostrating oneself
へいしんていとう
あたまがひくい
humble
ていか
fall
ひくい
low (rank, degree, value, content, quality, etc.)
ていきあつ
bad temper
ていおん
low temperature
low tone
ていち
depression
ひくめる
to lower
ていちょう
inactive
ていがくねん
lower grades of primary school (first, second, and sometimes third grades)