ちょっと一杯[chottoippai] let's have a quick drink
ばつ一[batsuichi] being once divorced
一向[hitaburu] nothing but
サラダ一皿[saradahitosara] plate of salad

安全第一[anzendaiichi] safety first
一か八か[ichikabachika] sink or swim
一っ走り[hitoppashiri] spin (as in 'take a car for a spin')
一つ一つ[hitotsuhitotsu] one-by-one

運針[unshin] handling the needle
検針[kenshin] inspection of a meter
絹針[kinubari] needle for silkwork
行動方針[koudouhoushin] course of action
指針[shishin] needle (of a compass, etc.)

自主指針[jishushishin] independent guideline
畳針[tatamibari] tatami needle
針鰻[hariunagi] elver (type of eel)
針金[harigane] wire

一門[ichimon] family
陰門[inmon] (female) genitalia
開門[kaimon] opening gate
凱旋門[gaisenmon] arch of triumph
冠木門[kabukimon] gate with a crossbar

関門[kanmon] barrier
玉門[gyokumon] beautifully decorated gate (euph. for female genitalia)
桑門[soumon] monk
軍門[gunmon] camp gate

円頂[enchou] dome
山の頂[yamanoitadaki] mountain top
山頂[sanchou] summit (e.g. mountain)
絶頂[zecchou] summit
頂きます[itadakimasu] expression of gratitude before meals

聴き頂く[kikiitadaku] to receive a hearing
頂き[itadaki] crown (of head)
頂き物[itadakimono] (received) present
頂上[choujou] top
頂戴[choudai] receiving