Laghukoshasamgraha 12.18

12.18

kālāyasamale cāpi karṇikā karṇabhūṣaṇe |
bījakośe sarojasya karamadhyāṅgulāvapi ||

and also for rust of iron; karṇikā is an ear ornament,
the seed-vessel of a lotus, and the middle finger;