You can hold one picture for the whole word: a long straight shaft with a sharp point at the far end, driven forward into something. The force is not in the hand but in the movement behind it, the way a rider's horse carries the point into a target. Change the size of that picture and you get the rest of the word: shrink it to a small blade opening a boil, and keep only the movement to get something shooting forward in a straight line.
From the word’s history
The evidence packet gives lance as coming from Middle English launce, from Old French lance, from Latin lancea, which named the weapon itself. So the weapon sense is the oldest recorded one, and the other uses in this map are described here as teaching links, not as claims about how each one developed.
供給的資料寫明：lance 來自中古英語 launce，再往前是古法文 lance，源頭是拉丁文 lancea，本來就是指這種長矛。所以「武器」這一層是有記載的最早用法。地圖上其他幾層，是為了幫助理解而做的連結，不是在主張它們的歷史演變過程。
Wiktionary entry supplied in the evidence packet (source_ref kaikki:3f6f69a190036ae4:587477288:41662)
登入就可以看每一支怎麼連回核心畫面。