凹 {wā}

1. depression
2. sunken
3. swamp

凹 nap¹ {āo}

1. a depression
2. indentation
3. concave
4. hollow

凹 nap¹ {wā}

1. variant of 窪
2. (used in names)

凹處〔-处〕 nap¹ cyu³ {āo chù}

alcove; dent

凹位 nap¹ wai² {āo wèi}

groove; dent

凹板 nap¹ baan² {āo bǎn}

1. intaglio
2. gravure

凹版 nap¹ baan² {āo bǎn}

1. an engraved printing plate
2. gravure
3. intaglio
4. material printed using gravure (e.g. postage stamps)

凹槽 nap¹ cou⁴ {āo cáo}

1. recess
2. notch
3. groove
4. fillister

凹凸 nap¹ dat⁶ {āo tū}

1. bumpy
2. uneven
3. slotted and tabbed joint
4. crenelation

凹雕 nap¹ diu¹ {āo diāo}

1. to engrave
2. to carve into

凹度 nap¹ dou⁶ {āo dù}

concavity

凹洞 nap¹ dung⁶ {āo dòng}

1. cavity
2. pit

凹鏡〔-镜〕 nap¹ geng³ {āo jìng}

concave mirror

凹陷 nap¹ haam⁶ {āo xiàn}

1. to cave in
2. hollow
3. sunken
4. depressed

凹坑 nap¹ haang¹ {āo kēng}

1. concave depression
2. crater

凹痕 nap¹ han⁴ {āo hén}

1. dent
2. indentation
3. notch
4. pitting

凹入 nap¹ jap⁶ {āo rù}

1. cavity
2. convex opening

凹紋〔-纹〕 nap¹ man⁴ {āo wén}

die (printing, metalwork etc)

凹岸 nap¹ ngon⁶ {āo àn}

concave bank

凹線〔-线〕 nap¹ sin³ {āo xiàn}

groove

凹進〔-进〕 nap¹ zeon³ {āo jìn}

1. concave
2. a concavity (lower than the surrounding area)
3. a depression
4. hollow
5. dented

凹凸印 nap¹ dat⁶ jan³ {āo tū yìn}

embossing

凹凸形 nap¹ dat⁶ jing⁴ {āo tū xíng}

1. in and out shape
2. crenelated

凹面鏡〔--镜〕 nap¹ min⁶ geng³ {āo miàn jìng}

concave mirror

凹朴皮 nap¹ pok³ pei⁴ {āo pò pí}

1. bark of tulip tree (TCM)
2. Cortex Liriodendri

凹透鏡〔--镜〕 nap¹ tau³ geng³ {āo tòu jìng}

concave lens

凹凹凸凸 nap¹ nap¹ dat⁶ dat⁶ {āo āo tū tū}

uneven; bumpy; rough (surface)

凹凸不平 nap¹ dat⁶ bat¹ ping⁴ {āo tū bù píng}

1. to be bumpy
2. uneven

凹凸印刷 nap¹ dat⁶ jan³ caat³ {āo tū yìn shuā}

1. embossing
2. die stamping

凹凸軋花〔--轧-〕 nap¹ dat⁶ zaat³ faa¹ {āo tū yà huā}

embossing