偏芯[henshin] eccentricity (in mechanics, electronics, etc.)
燈芯[toushin] (lamp) wick
帯芯[obishin] thick obi sash
摘芯[tekishin] thinning (buds and branches)
芯地[shinji] padding

替え芯[kaeshin] spare lead
鉛筆の芯[enpitsunoshin] lead of a pencil
硬の芯[kounoshin] hard pencil lead
林檎の芯[ringonoshin] core of an apple

薙ぎ倒す[nagitaosu] to mow down
薙鉈[naginata] halberd
神薙ぎ[kannagi] medium
薙ぎ払う[nagiharau] to mow down
薙刀術[naginatajutsu] art of using a naginata (halberd)

薙ぐ[nagu] to mow down
水薙鳥[mizunagidori] petrel (esp. petrels of family Procellariidae)
大水薙鳥[oomizunagidori] streaked shearwater (species of seabird, Calonectris leucomelas)
草薙剣[kusanaginotsurugi] Kusanagi no Tsurugi (alternate name for Ama-no-Murakumo no Tsurugi; the sword of the Imperial regalia)