3 słówka

Mógłby ktoś napisać co oznaczają te 3 słówka, bo nigdzie nie mogę znaleźć:

1. loom over -
w zdaniu, Lila would loom over Scarlett, arms crossed, and say, "I'm watching you"

2. arms crossed - z założonymi rękoma ?

3. race down -
w zdaniu: When her own daughter was manipulated by a "friend" into raicing down a slide booby-trapped with mud.|

Proszę o pomoc

w dobrych slownikach to jest wytlumaczone,
w pmoim
loom - to appear gradually and indistinctly , to emerge, to come into view, start up, slowly, esp as a vague and shadowy shape, to appear and seem to menace, appear with its size as though distorted and exaggerated by the atmosphere, to seem to menace, to appear of great importance.
Warto niekiedy zainwestowac pieniadze w dobre slowniki.

3. w tym kontekscie "wrobil" corke do zjechania na slizgawce ktora ktos posmarowal blotem.