Meaning of 氷山一角 in Japanese

It seems that your search contains the following:

Definition of 氷山一角

いっかく(ikkaku) · イッカク(ikkaku) 【一角】

(n) corner; section; point
選挙の結果その党は政権の一角を占めた。
The election gave the party a role in the government.
one horn
narwhal (Monodon monoceros)

ひょうざん(hyouzan) 【氷山】

(n) iceberg
水面に現れてるのは氷山の先端にすぎない。
What you see above the water is just the tip of the iceberg.

ひとかど(hitokado) · いっかど(ikkado) 【一角 ·一廉】

(n-adv, n-t, adj-no) a cut above the rest; superior; respectable; full-fledged; something uncommon
one field; one matter
(adv) suitably; reasonably