Radical 口
5 strokes
衹 隻
mouth 口 (5) + eight 八 (20) = only; one of a pair 只
The two traditional forms 祇 and 隻 correspond to zhǐ and zhī respectively. zhī is a measure word, and is also used to refer to things which usually come in pairs.
When this character appears as part of another character we will use the meaning “only” in the equation and the story.
只好 (18) zhǐhǎo have to
[只要 (101) zhǐyào provided that]
[只是 (30) zhǐshì only, just, merely]
[只有 (63) zhǐyǒu only if; have to]
[一只手 (1, 31) yì zhī shǒu a hand]

The octopus is at the mouth of the cave (it is an underwater cave and we are on the film set for “20,000 Leagues under the Sea”). The main scene will only work if they can film lots of swirling water. / Teddy suggests using a jacuzzi. They go to see if they can film in the giant’s jacuzzi. \ He gives them one of a pair of his old gloves to make a squid costume out of!