entries → 燈
TSUMUGU · TOCFL 1 (est.) · 字
燈 character · TOCFL 1 (est.)
燈 ＝ 火 ＋ 登
ㄉㄥ · dēng
noun — lamp, light

字源 FORM — what the parts do

火義fire, flame
登聲dēng — gives the sound, exactlya foot climbing up onto a raised stand (癶 + 豆)
A flame (火) raised up to give light — a lamp. 登 dēng carries the sound exactly, and it pictures climbing onto a stand, which suits a lamp lifted on its stem. The earlier graph wrote 鐙 with metal 金 (a lamp-stand); fire 火 replaced it for the oil flame. From it: 電燈、路燈、點燈. 登 builds the series: 燈、蹬、澄.

故事 STORY — a scene to remember it by

一點火（火）登（登）上燈架，亮起來——燈。
A flame (火) climbs (登) onto its stand and lights up — a lamp.
字源記憶法
意 · Meanings
(本義)燈、電燈— lamp, light常用
→點燈— to light a lamp
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
登dēngthe sound-giver standing bare — 登 alone means to climb; add fire 火 for the lamp鐙dèngthe older form — 鐙 wrote it with metal 金 for the lamp-stand before 火 took over